Dexter  Goodwin

Dexter Goodwin

1624096740

How to Replace an Item in a JavaScript Array?

Sometimes, we may want to replace an item in a JavaScript array.

In this article, we’ll look at how to replace an item in a JavaScript array.

Array.prototype.indexOf and Assignment

We can use the JavaScript array’s indexOf method to find the index of a given value in an array.

Then we can use the index to assign the new value to that index.

For instance, we can write:

const arr = [523, 353, 334, 31, 412];
const index = arr.indexOf(353);
if (index !== -1) {
  arr[index] = 1010;
}
console.log(arr)

We call arr.indexOf with the value we’re looking for.

It’ll return the index of the first instance of a value if it exists or -1 otherwise.

So if index isn’t -1, then we can replace the value at the given index with a new one by assigning it as we did in the if block.

So arr is now:

[523, 1010, 334, 31, 412]

#technology #web-development #javascript #programming

What is GEEK

Buddha Community

How to Replace an Item in a JavaScript Array?

How to Create Arrays in Python

In this tutorial, you'll know the basics of how to create arrays in Python using the array module. Learn how to use Python arrays. You'll see how to define them and the different methods commonly used for performing operations on them.

This tutorialvideo on 'Arrays in Python' will help you establish a strong hold on all the fundamentals in python programming language. Below are the topics covered in this video:  
1:15 What is an array?
2:53 Is python list same as an array?
3:48  How to create arrays in python?
7:19 Accessing array elements
9:59 Basic array operations
        - 10:33  Finding the length of an array
        - 11:44  Adding Elements
        - 15:06  Removing elements
        - 18:32  Array concatenation
       - 20:59  Slicing
       - 23:26  Looping  


Python Array Tutorial – Define, Index, Methods

In this article, you'll learn how to use Python arrays. You'll see how to define them and the different methods commonly used for performing operations on them.

The artcile covers arrays that you create by importing the array module. We won't cover NumPy arrays here.

Table of Contents

  1. Introduction to Arrays
    1. The differences between Lists and Arrays
    2. When to use arrays
  2. How to use arrays
    1. Define arrays
    2. Find the length of arrays
    3. Array indexing
    4. Search through arrays
    5. Loop through arrays
    6. Slice an array
  3. Array methods for performing operations
    1. Change an existing value
    2. Add a new value
    3. Remove a value
  4. Conclusion

Let's get started!

What are Python Arrays?

Arrays are a fundamental data structure, and an important part of most programming languages. In Python, they are containers which are able to store more than one item at the same time.

Specifically, they are an ordered collection of elements with every value being of the same data type. That is the most important thing to remember about Python arrays - the fact that they can only hold a sequence of multiple items that are of the same type.

What's the Difference between Python Lists and Python Arrays?

Lists are one of the most common data structures in Python, and a core part of the language.

Lists and arrays behave similarly.

Just like arrays, lists are an ordered sequence of elements.

They are also mutable and not fixed in size, which means they can grow and shrink throughout the life of the program. Items can be added and removed, making them very flexible to work with.

However, lists and arrays are not the same thing.

Lists store items that are of various data types. This means that a list can contain integers, floating point numbers, strings, or any other Python data type, at the same time. That is not the case with arrays.

As mentioned in the section above, arrays store only items that are of the same single data type. There are arrays that contain only integers, or only floating point numbers, or only any other Python data type you want to use.

When to Use Python Arrays

Lists are built into the Python programming language, whereas arrays aren't. Arrays are not a built-in data structure, and therefore need to be imported via the array module in order to be used.

Arrays of the array module are a thin wrapper over C arrays, and are useful when you want to work with homogeneous data.

They are also more compact and take up less memory and space which makes them more size efficient compared to lists.

If you want to perform mathematical calculations, then you should use NumPy arrays by importing the NumPy package. Besides that, you should just use Python arrays when you really need to, as lists work in a similar way and are more flexible to work with.

How to Use Arrays in Python

In order to create Python arrays, you'll first have to import the array module which contains all the necassary functions.

There are three ways you can import the array module:

  • By using import array at the top of the file. This includes the module array. You would then go on to create an array using array.array().
import array

#how you would create an array
array.array()
  • Instead of having to type array.array() all the time, you could use import array as arr at the top of the file, instead of import array alone. You would then create an array by typing arr.array(). The arr acts as an alias name, with the array constructor then immediately following it.
import array as arr

#how you would create an array
arr.array()
  • Lastly, you could also use from array import *, with * importing all the functionalities available. You would then create an array by writing the array() constructor alone.
from array import *

#how you would create an array
array()

How to Define Arrays in Python

Once you've imported the array module, you can then go on to define a Python array.

The general syntax for creating an array looks like this:

variable_name = array(typecode,[elements])

Let's break it down:

  • variable_name would be the name of the array.
  • The typecode specifies what kind of elements would be stored in the array. Whether it would be an array of integers, an array of floats or an array of any other Python data type. Remember that all elements should be of the same data type.
  • Inside square brackets you mention the elements that would be stored in the array, with each element being separated by a comma. You can also create an empty array by just writing variable_name = array(typecode) alone, without any elements.

Below is a typecode table, with the different typecodes that can be used with the different data types when defining Python arrays:

TYPECODEC TYPEPYTHON TYPESIZE
'b'signed charint1
'B'unsigned charint1
'u'wchar_tUnicode character2
'h'signed shortint2
'H'unsigned shortint2
'i'signed intint2
'I'unsigned intint2
'l'signed longint4
'L'unsigned longint4
'q'signed long longint8
'Q'unsigned long longint8
'f'floatfloat4
'd'doublefloat8

Tying everything together, here is an example of how you would define an array in Python:

import array as arr 

numbers = arr.array('i',[10,20,30])


print(numbers)

#output

#array('i', [10, 20, 30])

Let's break it down:

  • First we included the array module, in this case with import array as arr .
  • Then, we created a numbers array.
  • We used arr.array() because of import array as arr .
  • Inside the array() constructor, we first included i, for signed integer. Signed integer means that the array can include positive and negative values. Unsigned integer, with H for example, would mean that no negative values are allowed.
  • Lastly, we included the values to be stored in the array in square brackets.

Keep in mind that if you tried to include values that were not of i typecode, meaning they were not integer values, you would get an error:

import array as arr 

numbers = arr.array('i',[10.0,20,30])


print(numbers)

#output

#Traceback (most recent call last):
# File "/Users/dionysialemonaki/python_articles/demo.py", line 14, in <module>
#   numbers = arr.array('i',[10.0,20,30])
#TypeError: 'float' object cannot be interpreted as an integer

In the example above, I tried to include a floating point number in the array. I got an error because this is meant to be an integer array only.

Another way to create an array is the following:

from array import *

#an array of floating point values
numbers = array('d',[10.0,20.0,30.0])

print(numbers)

#output

#array('d', [10.0, 20.0, 30.0])

The example above imported the array module via from array import * and created an array numbers of float data type. This means that it holds only floating point numbers, which is specified with the 'd' typecode.

How to Find the Length of an Array in Python

To find out the exact number of elements contained in an array, use the built-in len() method.

It will return the integer number that is equal to the total number of elements in the array you specify.

import array as arr 

numbers = arr.array('i',[10,20,30])


print(len(numbers))

#output
# 3

In the example above, the array contained three elements – 10, 20, 30 – so the length of numbers is 3.

Array Indexing and How to Access Individual Items in an Array in Python

Each item in an array has a specific address. Individual items are accessed by referencing their index number.

Indexing in Python, and in all programming languages and computing in general, starts at 0. It is important to remember that counting starts at 0 and not at 1.

To access an element, you first write the name of the array followed by square brackets. Inside the square brackets you include the item's index number.

The general syntax would look something like this:

array_name[index_value_of_item]

Here is how you would access each individual element in an array:

import array as arr 

numbers = arr.array('i',[10,20,30])

print(numbers[0]) # gets the 1st element
print(numbers[1]) # gets the 2nd element
print(numbers[2]) # gets the 3rd element

#output

#10
#20
#30

Remember that the index value of the last element of an array is always one less than the length of the array. Where n is the length of the array, n - 1 will be the index value of the last item.

Note that you can also access each individual element using negative indexing.

With negative indexing, the last element would have an index of -1, the second to last element would have an index of -2, and so on.

Here is how you would get each item in an array using that method:

import array as arr 

numbers = arr.array('i',[10,20,30])

print(numbers[-1]) #gets last item
print(numbers[-2]) #gets second to last item
print(numbers[-3]) #gets first item
 
#output

#30
#20
#10

How to Search Through an Array in Python

You can find out an element's index number by using the index() method.

You pass the value of the element being searched as the argument to the method, and the element's index number is returned.

import array as arr 

numbers = arr.array('i',[10,20,30])

#search for the index of the value 10
print(numbers.index(10))

#output

#0

If there is more than one element with the same value, the index of the first instance of the value will be returned:

import array as arr 


numbers = arr.array('i',[10,20,30,10,20,30])

#search for the index of the value 10
#will return the index number of the first instance of the value 10
print(numbers.index(10))

#output

#0

How to Loop through an Array in Python

You've seen how to access each individual element in an array and print it out on its own.

You've also seen how to print the array, using the print() method. That method gives the following result:

import array as arr 

numbers = arr.array('i',[10,20,30])

print(numbers)

#output

#array('i', [10, 20, 30])

What if you want to print each value one by one?

This is where a loop comes in handy. You can loop through the array and print out each value, one-by-one, with each loop iteration.

For this you can use a simple for loop:

import array as arr 

numbers = arr.array('i',[10,20,30])

for number in numbers:
    print(number)
    
#output
#10
#20
#30

You could also use the range() function, and pass the len() method as its parameter. This would give the same result as above:

import array as arr  

values = arr.array('i',[10,20,30])

#prints each individual value in the array
for value in range(len(values)):
    print(values[value])

#output

#10
#20
#30

How to Slice an Array in Python

To access a specific range of values inside the array, use the slicing operator, which is a colon :.

When using the slicing operator and you only include one value, the counting starts from 0 by default. It gets the first item, and goes up to but not including the index number you specify.

import array as arr 

#original array
numbers = arr.array('i',[10,20,30])

#get the values 10 and 20 only
print(numbers[:2])  #first to second position

#output

#array('i', [10, 20])

When you pass two numbers as arguments, you specify a range of numbers. In this case, the counting starts at the position of the first number in the range, and up to but not including the second one:

import array as arr 

#original array
numbers = arr.array('i',[10,20,30])


#get the values 20 and 30 only
print(numbers[1:3]) #second to third position

#output

#rray('i', [20, 30])

Methods For Performing Operations on Arrays in Python

Arrays are mutable, which means they are changeable. You can change the value of the different items, add new ones, or remove any you don't want in your program anymore.

Let's see some of the most commonly used methods which are used for performing operations on arrays.

How to Change the Value of an Item in an Array

You can change the value of a specific element by speficying its position and assigning it a new value:

import array as arr 

#original array
numbers = arr.array('i',[10,20,30])

#change the first element
#change it from having a value of 10 to having a value of 40
numbers[0] = 40

print(numbers)

#output

#array('i', [40, 20, 30])

How to Add a New Value to an Array

To add one single value at the end of an array, use the append() method:

import array as arr 

#original array
numbers = arr.array('i',[10,20,30])

#add the integer 40 to the end of numbers
numbers.append(40)

print(numbers)

#output

#array('i', [10, 20, 30, 40])

Be aware that the new item you add needs to be the same data type as the rest of the items in the array.

Look what happens when I try to add a float to an array of integers:

import array as arr 

#original array
numbers = arr.array('i',[10,20,30])

#add the integer 40 to the end of numbers
numbers.append(40.0)

print(numbers)

#output

#Traceback (most recent call last):
#  File "/Users/dionysialemonaki/python_articles/demo.py", line 19, in <module>
#   numbers.append(40.0)
#TypeError: 'float' object cannot be interpreted as an integer

But what if you want to add more than one value to the end an array?

Use the extend() method, which takes an iterable (such as a list of items) as an argument. Again, make sure that the new items are all the same data type.

import array as arr 

#original array
numbers = arr.array('i',[10,20,30])

#add the integers 40,50,60 to the end of numbers
#The numbers need to be enclosed in square brackets

numbers.extend([40,50,60])

print(numbers)

#output

#array('i', [10, 20, 30, 40, 50, 60])

And what if you don't want to add an item to the end of an array? Use the insert() method, to add an item at a specific position.

The insert() function takes two arguments: the index number of the position the new element will be inserted, and the value of the new element.

import array as arr 

#original array
numbers = arr.array('i',[10,20,30])

#add the integer 40 in the first position
#remember indexing starts at 0

numbers.insert(0,40)

print(numbers)

#output

#array('i', [40, 10, 20, 30])

How to Remove a Value from an Array

To remove an element from an array, use the remove() method and include the value as an argument to the method.

import array as arr 

#original array
numbers = arr.array('i',[10,20,30])

numbers.remove(10)

print(numbers)

#output

#array('i', [20, 30])

With remove(), only the first instance of the value you pass as an argument will be removed.

See what happens when there are more than one identical values:

import array as arr 

#original array
numbers = arr.array('i',[10,20,30,10,20])

numbers.remove(10)

print(numbers)

#output

#array('i', [20, 30, 10, 20])

Only the first occurence of 10 is removed.

You can also use the pop() method, and specify the position of the element to be removed:

import array as arr 

#original array
numbers = arr.array('i',[10,20,30,10,20])

#remove the first instance of 10
numbers.pop(0)

print(numbers)

#output

#array('i', [20, 30, 10, 20])

Conclusion

And there you have it - you now know the basics of how to create arrays in Python using the array module. Hopefully you found this guide helpful.

Thanks for reading and happy coding!

#python #programming 

Saul  Alaniz

Saul Alaniz

1647743100

Comparando Los Mejores Generadores De Grid CSS

Rejillas, rejillas, rejillas. Tantas cosas que podemos hacer con ellos. Pero, tantas propiedades que tenemos que recordar. 😅

Si eres como yo y siempre tienes que recurrir a Google cuando usas grillas, los trucos que veremos en esta guía te harán la vida mucho más fácil como desarrollador.

¿Qué son los generadores de grid CSS?

Un generador de cuadrículas es un sitio web que puede usar para generar una cuadrícula con unos pocos clics. Pero, ¿por qué deberías preocuparte por ellos? En mi caso, los uso con bastante frecuencia cuando quiero diseñar el diseño de mis sitios web o una estructura receptiva compleja dentro de una interfaz. Las cuadrículas son geniales porque te ayudan a lograr mucho con solo unas pocas líneas CSS, lo que ahorra mucho tiempo.

En este artículo, compararemos los siguientes generadores de grillas CSS y enumeraremos sus ventajas y desventajas para que pueda marcar su favorito:

  • Generador de cuadrícula CSS
  • Generador de diseño CSS
  • Diseño de cuadrícula
  • rejilla
  • cssgr.id
  • Cuadrícula CSS de Angry Tools

Además, para ahorrarle tiempo, hice una hoja de trucos con las propiedades esenciales de la cuadrícula CSS que debe recordar. 🥳 Esta hoja de trucos está disponible al final de este artículo.

1. Generador de cuadrícula CSS

Puse CSS Grid Generator primero en mi lista porque lo uso más. Es un proyecto de código abierto diseñado por Sarah Drasner (el código del proyecto está disponible aquí si quieres contribuir).

Para darte un ejemplo, hace poco necesitaba generar una cuadrícula simple con dos filas y tres columnas. No recordaba cómo establecer un tamaño específico para el espacio entre filas y entre columnas. Con CSS Grid Generator, pude crear fácilmente la estructura que deseaba y pasar a tareas más complejas.

.parent { pantalla: cuadrícula; cuadrícula-plantilla-columnas: repetir (3, 1fr); cuadrícula-plantilla-filas: repetir (2, 1fr); cuadrícula-columna-brecha: 60px; cuadrícula-fila-brecha: 30px; }

La cuadrícula final se veía así:

Ventajas:

  • La interfaz es fácil de usar y los colores están bien elegidos, lo que convierte a CSS Grid Generator en una excelente herramienta para los principiantes que desean familiarizarse más con las cuadrículas CSS.
  • CSS Grid Generator puede ayudarlo a obtener el resultado que desea para la mayoría de los casos de uso porque puede especificar la cantidad de columnas, filas y espacios en sus cuadrículas
  • Simplemente presione un botón para obtener una vista previa del código y copiarlo en su portapapeles

Contras:

  • No hay una plantilla que pueda elegir para ahorrarle tiempo
  • No podrás generar diseños complicados

2. Generador de diseño CSS

Podría haber puesto el Generador de diseño CSS primero en la lista. Si está buscando generar cuadrículas complicadas todo el tiempo, esta es probablemente la que debería marcar. Desarrollado por Braid Design System , CSS Layout Generator ofrece una amplia gama de opciones que resolverán la mayoría de los dolores de cabeza.

En mi trabajo diario, uso mucho las plantillas CSS Layout Generator porque te permiten elegir convenientemente entre una estructura con una barra lateral/contenedor o un encabezado/principal/pie de página.

<section class="layout">
  <!-- The left sidebar where you can put your navigation items etc. -->
  <div class="sidebar">1</div>

  <!-- The main content of your website -->
  <div class="body">2</div>
</section>

<style>
.layout {
  width: 1366px;
  height: 768px;
  display: grid;
  /* This is the most important part where we define the size of our sidebar and body  */
  grid:
    "sidebar body" 1fr
    / auto 1fr;
  gap: 8px;
}

.sidebar {
  grid-area: sidebar;
}

.body {
  grid-area: body;
}
</style>

La opción de la barra lateral se ve así:

Ventajas:

  • CSS Layout Generator le permite elegir entre seis plantillas estándar para comenzar más rápido
  • Hay muchas opciones para resolver casi todos los casos de uso
  • Puede cambiar entre cuadrículas y Flexbox, lo cual es útil para comparar ambas opciones
  • La interfaz es excelente y fácil de usar.

Contras:

  • Debido a que ofrece tantas opciones, CSS Layout Generator puede resultar confuso para un principiante.

3. Diseño de cuadrícula

Grid Layout fue desarrollado por Leniolabs y es otro generador de grillas que viene con muchas opciones. El código está disponible públicamente en GitHub si está interesado en contribuir .

La semana pasada, un cliente me pidió que diseñara una interfaz para mostrar métricas importantes sobre su producto (algo similar a Geckoboard ). El diseño que quería era muy preciso pero, gracias a LayoutIt, generé el código en unos segundos.

<div class="container">
  <div class="metric-1"></div>
  <div class="metric-2"></div>
  <div class="metrics-3"></div>
  <div class="metric-4"></div>
  <div class="metric-5"></div>
  <div class="metric-6"></div>
</div>

<style>
.container {
  display: grid;
  grid-template-columns: 1fr 1fr 1fr;
  grid-template-rows: 1fr 1fr 1fr;
  gap: 20px 20px;
  grid-auto-flow: row;
  grid-template-areas:
    "metric-1 metric-1 metric-2"
    "metrics-3 metric-4 metric-2"
    "metric-5 metric-5 metric-6";
}
.metric-1 {
  grid-area: metric-1;
}
.metric-2 {
  grid-area: metric-2;
}
.metrics-3 {
  grid-area: metrics-3;
}
.metric-4 {
  grid-area: metric-4;
}
.metric-5 {
  grid-area: metric-5;
}
.metric-6 {
  grid-area: metric-6;
}
</style>

El diseño resultante se veía así:

Ventajas:

  • Grid Layout Es intuitivo de usar y ofrece muchas opciones
  • Puede configurar sus columnas y sus filas usando píxeles (px), fraccionarios (fr) y porcentajes (%)
  • Sus diseños se pueden exportar a CodePen, CodeSandbox o StackBlitz con un solo clic
  • La interfaz está bien diseñada, con un contraste adecuado entre las opciones y la vista previa de la cuadrícula.
  • Diseño de cuadrícula Admite opciones de ubicación de cuadrícula

Contras:

  • Este generador no proporciona plantillas para ahorrarle tiempo, que es la razón principal por la que lo puse tercero en la lista.

4. cuadrícula

En mi experiencia pasada, pasé mucho tiempo usando Griddy . Es un poco menos fácil de usar que la cuadrícula CSS creada por Sarah Drasner, pero ofrece más opciones.

Por ejemplo, le permite generar fácilmente una cuadrícula de cuatro columnas con tres filas:

.container {
  display: grid;
  grid-template-columns: 1fr 300px 1fr 1fr;
  grid-template-rows: 2fr 100px 1fr;
  grid-column-gap: 10px
  grid-row-gap: 20px
  justify-items: stretch
  align-items: stretch
}

El diseño resultante se ve así:

Ventajas:

  • Puede configurar sus columnas y sus filas usando píxeles (px), fraccionarios (fr) y porcentajes (%)
  • Las opciones proporcionadas son suficientes para resolver la mayoría de los casos de uso y probar diferentes alineaciones. En pocas palabras, hace el trabajo

Contras:

  • Puede que sea una cuestión de gustos, pero la barra lateral con las opciones no es la mejor interfaz para mí. Tienes que desplazarte un rato para conseguir lo que buscas
  • No hay plantillas para elegir
  • no hay minmax()funcion

5. Cssgr.id

Cssgr.id es otra excelente opción si está buscando un generador de cuadrícula que no tenga demasiadas opciones pero sí las suficientes para resolver la mayoría de los casos de uso.

Usé Cssgr.id el año pasado para crear una galería porque recordé que tenía una plantilla de galería. Con unos pocos clics, pude obtener algo bastante parecido a lo que necesitaba.

<div class="grid">
  <!-- This item will take 3 columns and 2 rows -->
  <div class="span-col-3 span-row-2">Item 1</div>

  <!-- This item will take 1 column and 1 row -->
  <div>Item 2</div>
  <div class="span-row-2">Item 3</div>
  <div class="span-row-3">Item 4</div>

  <!-- This item will take 1 column and 1 row -->
  <div>Item 5</div>

  <!-- This item will take 1 column and 1 row -->
  <div>Item 6</div>

  <!-- This item will take 1 column and 1 row -->
  <div>Item 7</div>

  <!-- This item will take 3 columns and 2 rows -->
  <div class="span-col-3 span-row-2">Item 8</div>

  <!-- This item will take 2 columns and 3 rows -->
  <div class="span-col-2 span-row-2">Item 9</div>

  <!-- This item will take 1 column and 1 row -->
  <div>Item 10</div>

  <!-- This item will take 1 column and 1 row -->
  <div>Item 11</div>

  <!-- This item will take 1 column and 1 row -->
  <div>Item 12</div>

  <!-- This item will take 1 column and 1 row -->
  <div>Item 13</div>

  <!-- This item will take 1 column and 1 row -->
  <div>Item 14</div>
</div>

<style>
.grid {
  display: grid;
  grid-template-columns: repeat(6, 1fr);
  grid-gap: 10px;
}

/* Items with this class will take 3 columns */
.span-col-3 {
  grid-column: span 3 / auto;
}

/* Items with this class will take 2 columns */
.span-col-2 {
  grid-column: span 2 / auto;
}

/* Items with this class will take 2 rows */
.span-row-2 {
  grid-row: span 2 / auto;
}

/* Items with this class will take 3 rows */
.span-row-3 {
  grid-row: span 3 / auto;
}
</style>

La galería quedó así:

Ventajas:

  • Cssgr.id viene con cinco diseños de inicio prácticos para elegir (3 × 3, formación de fútbol, ​​encabezado/pie de página, galería y sitio web genérico)
  • Puede agregar texto de marcador de posición para ver cómo se representa con algún contenido escrito
  • Tiene una interfaz bien diseñada que se puede configurar fácilmente.

Contras:

  • No es el generador de grillas con más opciones

6. Cuadrícula CSS de Angry Tools

Angry Tools CSS Grid es el último generador de cuadrículas CSS de nuestra lista. Puede ser útil, aunque probablemente menos fácil de usar que las otras herramientas destacadas en esta guía.

Angry Tools CSS Grid también es útil para generar galerías. Al hacer clic en los cuadrados, puede definir sus tamaños y sus direcciones (horizontal o verticalmente).

<div class="angry-grid">
  <div id="item-0">Item 0</div>
  <div id="item-1">Item 1</div>
  <div id="item-2">Item 2</div>
  <div id="item-3">Item 3</div>
  <div id="item-4">Item 4</div>
  <div id="item-5">Item 5</div>
  <div id="item-6">Item 6</div>
  <div id="item-7">Item 7</div>
  <div id="item-8">Item 8</div>
  <div id="item-9">Item 9</div>
</div>

<style>
.angry-grid {
  display: grid;
  /* Our grid will be displayed using 3 rows */
  grid-template-rows: 1fr 1fr 1fr;
  /* Our grid will be displayed using 4 columns */
  grid-template-columns: 1fr 1fr 1fr 1fr 1fr;
  /* You can define a gap between your columns and your rows if you need to */
  gap: 0px;
  height: 100%;
}

/* This grid item will start at row 1 and column 4 and end at row 2 and column 5 */
#item-0 {
  background-color: #8bf7ba;
  grid-row-start: 1;
  grid-column-start: 4;
  grid-row-end: 2;
  grid-column-end: 5;
}

/* This grid item will start at row 2 and column 3 and end at row 3 and column 5 */
#item-1 {
  background-color: #bf9aa7;
  grid-row-start: 2;
  grid-column-start: 3;
  grid-row-end: 3;
  grid-column-end: 5;
}

/* This grid item will start at row 2 and column 2 and end at row 3 and column 3 */
#item-2 {
  background-color: #c7656e;
  grid-row-start: 2;
  grid-column-start: 2;
  grid-row-end: 3;
  grid-column-end: 3;
}

/* This grid item will start at row 1 and column 1 and end at row 2 and column 3 */
#item-3 {
  background-color: #b659df;
  grid-row-start: 1;
  grid-column-start: 1;
  grid-row-end: 2;
  grid-column-end: 3;
}

/* This grid item will start at row 3 and column 1 and end at row 4 and column 3 */
#item-4 {
  background-color: #be6b5e;
  grid-row-start: 3;
  grid-column-start: 1;
  grid-row-end: 4;
  grid-column-end: 3;
}

/* This grid item will start at row 3 and column 4 and end at row 4 and column 6 */
#item-5 {
  background-color: #5bb9d7;
  grid-row-start: 3;
  grid-column-start: 4;
  grid-row-end: 4;
  grid-column-end: 6;
}

/* This grid item will start at row 1 and column 5 and end at row 3 and column 6 */
#item-6 {
  background-color: #56adba;
  grid-row-start: 1;
  grid-column-start: 5;
  grid-row-end: 3;
  grid-column-end: 6;
}

/* This grid item will start at row 1 and column 3 and end at row 2 and column 4 */
#item-7 {
  background-color: #9cab58;
  grid-row-start: 1;
  grid-column-start: 3;
  grid-row-end: 2;
  grid-column-end: 4;
}

/* This grid item will start at row 3 and column 3 and end at row 4 and column 4 */
#item-8 {
  background-color: #8558ad;
  grid-row-start: 3;
  grid-column-start: 3;
  grid-row-end: 4;
  grid-column-end: 4;
}

/* This grid item will start at row 2 and column 1 and end at row 3 and column 2 */
#item-9 {
  background-color: #96b576;
  grid-row-start: 2;
  grid-column-start: 1;
  grid-row-end: 3;
  grid-column-end: 2;
}
</style>

La galería resultante se ve así:

Ventajas:

  • Angry Tools CSS Grid viene con algunas plantillas entre las que puede elegir

Contras:

  • No tiene el mejor diseño en general. Para ser honesto, es bastante feo y puede ser difícil de usar.
  • No recomendaría esta herramienta para principiantes. Los desarrolladores avanzados probablemente también deberían elegir CSS Layout Generator o Grid LayoutIt en su lugar
  • Tienes que desplazarte para obtener los resultados de CSS

BONIFICACIÓN: hoja de trucos de cuadrícula CSS

Los generadores de cuadrículas CSS son excelentes cuando no está familiarizado con las propiedades CSS. Pero, a medida que se convierte en un desarrollador más avanzado, es posible que una hoja de trucos rápidos sea probablemente más útil.

😇 Si te puede ayudar, aquí está el que he hecho para mí:

gapEstablece el tamaño del espacio entre las filas y las columnas. Es una forma abreviada de las siguientes propiedades: row-gapycolumn-gap
row-gapEspecifica el espacio entre las filas de la cuadrícula.
column-gapEspecifica el espacio entre las columnas.
gridUna propiedad abreviada para: grid-template-rows, grid-template-columns, grid-template-areas, grid-auto-rows, grid-auto-columns,grid-auto-flow
grid-areaEspecifica el tamaño y la ubicación de un elemento de cuadrícula en un diseño de cuadrícula y es una propiedad abreviada para las siguientes propiedades: grid-row-start, grid-column-start, grid-row-end,grid-column-end
grid-auto-columnsEstablece el tamaño de las columnas en un contenedor de cuadrícula.
grid-auto-flowControla cómo se insertan en la cuadrícula los elementos colocados automáticamente
grid-auto-rowsEstablece el tamaño de las filas en un contenedor de cuadrícula
grid-columnEspecifica el tamaño y la ubicación de un elemento de cuadrícula en un diseño de cuadrícula y es una propiedad abreviada para las siguientes propiedades: grid-column-start,grid-column-end
grid-column-endDefine cuántas columnas abarcará un elemento o en qué línea de columna terminará el elemento
grid-column-gapDefine el tamaño del espacio entre las columnas en un diseño de cuadrícula
grid-column-startDefine en qué línea de columna comenzará el elemento
grid-gapDefine el tamaño del espacio entre filas y columnas en un diseño de cuadrícula y es una propiedad abreviada para las siguientes propiedades: grid-row-gap,grid-column-gap
grid-rowEspecifica el tamaño y la ubicación de un elemento de cuadrícula en un diseño de cuadrícula y es una propiedad abreviada para las siguientes propiedades: grid-row-start,grid-row-end
grid-row-endDefine cuántas filas abarcará un elemento o en qué línea de fila terminará el elemento
grid-row-gapDefine el tamaño del espacio entre las filas en un diseño de cuadrícula
grid-row-startDefine en qué línea de fila comenzará el artículo
grid-templateUna propiedad abreviada para las siguientes propiedades: grid-template-rows, grid-template-columns,grid-template-areas
grid-template-areasEspecifica áreas dentro del diseño de cuadrícula.
grid-template-columnsEspecifica el número (y el ancho) de las columnas en un diseño de cuadrícula
grid-template-rowsEspecifica el número (y las alturas) de las filas en un diseño de cuadrícula

Espero que esta comparación rápida de los mejores generadores de grillas CSS te haya ayudado a marcar tu favorito.

Además, si puedo darte un consejo crítico cuando trabajes con grillas CSS: tómate tu tiempo. Estos generadores son una excelente opción porque pueden ayudarlo a obtener los diseños que necesita paso a paso y evitar depender de una solución complicada.

¡Gracias por leer!  

Fuente: https://blog.logrocket.com/comparing-best-css-grid-generators/

#css 

伊藤  直子

伊藤 直子

1647732000

最高のCSSグリッドジェネレーターの比較

グリッド、グリッド、グリッド。それらを使ってできることはたくさんあります。しかし、覚えておかなければならない多くのプロパティ。😅

あなたが私のようで、グリッドを使用するときに常にGoogleに頼らなければならない場合、このガイドで説明するトリックは、開発者としてのあなたの生活をはるかに楽にします。

CSSグリッドジェネレーターとは何ですか?

グリッドジェネレーターは、数回クリックするだけでグリッドを生成するために使用できるWebサイトです。しかし、なぜあなたはそれらを気にする必要がありますか?私の場合、Webサイトのレイアウトや、インターフェイス内の複雑なレスポンシブ構造を設計するときに、これらを頻繁に使用します。グリッドは、わずか数行のCSSで多くのことを達成するのに役立ち、多くの時間を節約できるので素晴らしいです。

この記事では、次のCSSグリッドジェネレーターを比較し、それらの長所と短所を一覧表示して、お気に入りのものをブックマークできるようにします。

  • CSSグリッドジェネレーター
  • CSSレイアウトジェネレーター
  • グリッドLayoutIt
  • グリディ
  • Cssgr.id
  • AngryToolsCSSグリッド

また、時間を節約するために、覚えておく必要のある重要なCSSグリッドプロパティを使用してチートシートを作成しました。🥳このチートシートは、この記事の下部にあります。

1.CSSグリッドジェネレーター

CSSグリッドジェネレーターを最もよく使用するので、リストの最初に置きます。これはSarahDrasnerによって設計されたオープンソースプロジェクトです(プロジェクトのコードは、貢献したい場合はここから入手できます)。

例を挙げると、最近、2行3列の単純なグリッドを生成する必要がありました。行ギャップと列ギャップに特定のサイズを設定する方法を覚えていませんでした。CSS Grid Generatorを使用すると、必要な構造を簡単に作成して、より複雑なタスクに進むことができました。

.parent {表示:グリッド; grid-template-columns:repeat(3、1fr); grid-template-rows:repeat(2、1fr); grid-column-gap:60px; grid-row-gap:30px; }

最終的なグリッドは次のようになりました。

長所:

  • インターフェイスはユーザーフレンドリーで、色も適切に選択されているため、CSSグリッドジェネレーターはCSSグリッドに慣れたい初心者にとって優れたツールです。
  • CSSグリッドジェネレーターは、グリッド全体の列、行、およびギャップの数を指定できるため、ほとんどのユースケースで必要な結果を得るのに役立ちます。
  • ボタンを1つ押すだけで、コードをプレビューしてクリップボードにコピーできます

短所:

  • 時間を節約するために選択できるテンプレートはありません
  • 複雑なレイアウトを生成することはできません

2.CSSレイアウトジェネレーター

CSSレイアウトジェネレーターをリストの最初に置くこともできます。常に複雑なグリッドを生成する場合は、これをブックマークする必要があります。ブレードデザインシステムによって開発されたCSSレイアウトジェネレーターは、ほとんどの頭痛の種を解決する幅広いオプションを提供します。

私の日常業務では、CSSレイアウトジェネレーターテンプレートを頻繁に使用します。これは、サイドバー/コンテナーまたはヘッダー/メイン/フッターのある構造を便利に選択できるためです。

<section class="layout">
  <!-- The left sidebar where you can put your navigation items etc. -->
  <div class="sidebar">1</div>

  <!-- The main content of your website -->
  <div class="body">2</div>
</section>

<style>
.layout {
  width: 1366px;
  height: 768px;
  display: grid;
  /* This is the most important part where we define the size of our sidebar and body  */
  grid:
    "sidebar body" 1fr
    / auto 1fr;
  gap: 8px;
}

.sidebar {
  grid-area: sidebar;
}

.body {
  grid-area: body;
}
</style>

サイドバーオプションは次のようになります。

長所:

  • CSS Layout Generatorを使用すると、6つの標準テンプレートから選択してより早く開始できます
  • ほぼすべてのユースケースを解決するための多くのオプションがあります
  • グリッドとFlexboxを切り替えることができます。これは、両方のオプションを比較するのに役立ちます
  • インターフェースは素晴らしく、ユーザーフレンドリーです

短所:

  • それは非常に多くのオプションを提供するので、CSSレイアウトジェネレータは初心者にとって混乱する可能性があります

3.グリッドLayoutIt

グリッドレイアウトこれはLeniolabsによって開発されたもので、多くのオプションを備えたもう1つのグリッドジェネレーターです。貢献に興味がある場合は、コードをGitHubで公開しています。

先週、顧客から、製品に関する重要なメトリックを表示するためのインターフェイスを設計するように依頼されました(Geckoboardに多少似ています)。彼が望んでいたレイアウトは非常に正確でしたが、LayoutItのおかげで、数秒でコードを生成できました。

<div class="container">
  <div class="metric-1"></div>
  <div class="metric-2"></div>
  <div class="metrics-3"></div>
  <div class="metric-4"></div>
  <div class="metric-5"></div>
  <div class="metric-6"></div>
</div>

<style>
.container {
  display: grid;
  grid-template-columns: 1fr 1fr 1fr;
  grid-template-rows: 1fr 1fr 1fr;
  gap: 20px 20px;
  grid-auto-flow: row;
  grid-template-areas:
    "metric-1 metric-1 metric-2"
    "metrics-3 metric-4 metric-2"
    "metric-5 metric-5 metric-6";
}
.metric-1 {
  grid-area: metric-1;
}
.metric-2 {
  grid-area: metric-2;
}
.metrics-3 {
  grid-area: metrics-3;
}
.metric-4 {
  grid-area: metric-4;
}
.metric-5 {
  grid-area: metric-5;
}
.metric-6 {
  grid-area: metric-6;
}
</style>

結果のレイアウトは次のようになります。

長所:

  • グリッドレイアウト直感的に使用でき、多くのオプションを提供します
  • ピクセル(px)、フラクショナル(fr)、およびパーセンテージ(%)を使用して、列と行を設定できます。
  • レイアウトは、ワンクリックでCodePen、CodeSandbox、またはStackBlitzにエクスポートできます
  • インターフェースは適切に設計されており、オプションとグリッドプレビューの間に適切なコントラストがあります。
  • グリッドレイアウトグリッド配置オプションをサポート

短所:

  • このジェネレーターは、時間を節約するためのテンプレートを提供していません。これが、リストの3番目に配置した主な理由です。

4.グリディ

私の過去の経験では、Griddyを使用して多くの時間を費やしました。Sarah Drasnerによって作成されたCSSグリッドよりも使いやすさは少し劣りますが、より多くのオプションが提供されます。

たとえば、次の3行の4列グリッドを簡単に生成できます。

.container {
  display: grid;
  grid-template-columns: 1fr 300px 1fr 1fr;
  grid-template-rows: 2fr 100px 1fr;
  grid-column-gap: 10px
  grid-row-gap: 20px
  justify-items: stretch
  align-items: stretch
}

結果のレイアウトは次のようになります。

長所:

  • ピクセル(px)、フラクショナル(fr)、およびパーセンテージ(%)を使用して、列と行を設定できます。
  • 提供されているオプションは、ほとんどのユースケースを解決し、さまざまな配置をテストするのに十分です。一言で言えば、それは仕事を成し遂げます

短所:

  • 好みの問題かもしれませんが、オプション付きのサイドバーは私にとって最適なインターフェイスではありません。探しているものを取得するには、しばらくスクロールする必要があります
  • 選択できるテンプレートはありません
  • minmax()機能はありません

5. Cssgr.id

Cssgr.idは、オプションが多すぎないが、ほとんどのユースケースを解決するのに十分なグリッドジェネレーターを探している場合のもう1つの優れた選択肢です。

ギャラリーテンプレートがあることを思い出したので、昨年Cssgr.idを使用してギャラリーを作成しました。数回クリックするだけで、必要なものに非常に近いものを得ることができました。

<div class="grid">
  <!-- This item will take 3 columns and 2 rows -->
  <div class="span-col-3 span-row-2">Item 1</div>

  <!-- This item will take 1 column and 1 row -->
  <div>Item 2</div>
  <div class="span-row-2">Item 3</div>
  <div class="span-row-3">Item 4</div>

  <!-- This item will take 1 column and 1 row -->
  <div>Item 5</div>

  <!-- This item will take 1 column and 1 row -->
  <div>Item 6</div>

  <!-- This item will take 1 column and 1 row -->
  <div>Item 7</div>

  <!-- This item will take 3 columns and 2 rows -->
  <div class="span-col-3 span-row-2">Item 8</div>

  <!-- This item will take 2 columns and 3 rows -->
  <div class="span-col-2 span-row-2">Item 9</div>

  <!-- This item will take 1 column and 1 row -->
  <div>Item 10</div>

  <!-- This item will take 1 column and 1 row -->
  <div>Item 11</div>

  <!-- This item will take 1 column and 1 row -->
  <div>Item 12</div>

  <!-- This item will take 1 column and 1 row -->
  <div>Item 13</div>

  <!-- This item will take 1 column and 1 row -->
  <div>Item 14</div>
</div>

<style>
.grid {
  display: grid;
  grid-template-columns: repeat(6, 1fr);
  grid-gap: 10px;
}

/* Items with this class will take 3 columns */
.span-col-3 {
  grid-column: span 3 / auto;
}

/* Items with this class will take 2 columns */
.span-col-2 {
  grid-column: span 2 / auto;
}

/* Items with this class will take 2 rows */
.span-row-2 {
  grid-row: span 2 / auto;
}

/* Items with this class will take 3 rows */
.span-row-3 {
  grid-row: span 3 / auto;
}
</style>

ギャラリーは次のようになりました。

長所:

  • Cssgr.idには、5つの実用的なスターターレイアウト(3×3、サッカーフォーメーション、ヘッダー/フッター、ギャラリー、および一般的なWebサイト)から選択できます。
  • プレースホルダーテキストを追加して、書かれたコンテンツでどのようにレンダリングされるかを確認できます
  • 簡単に設定できる適切に設計されたインターフェイスを備えています

短所:

  • ほとんどのオプションを備えたグリッドジェネレータではありません

6. AngryToolsCSSグリッド

Angry Tools CSSグリッドは、リストの最後のCSSグリッドジェネレーターです。このガイドで強調表示されている他のツールよりもユーザーフレンドリーではないかもしれませんが、便利な場合があります。

Angry Tools CSSグリッドは、ギャラリーを生成するときにも役立ちます。正方形をクリックすると、サイズと方向(水平または垂直)を定義できます。

<div class="angry-grid">
  <div id="item-0">Item 0</div>
  <div id="item-1">Item 1</div>
  <div id="item-2">Item 2</div>
  <div id="item-3">Item 3</div>
  <div id="item-4">Item 4</div>
  <div id="item-5">Item 5</div>
  <div id="item-6">Item 6</div>
  <div id="item-7">Item 7</div>
  <div id="item-8">Item 8</div>
  <div id="item-9">Item 9</div>
</div>

<style>
.angry-grid {
  display: grid;
  /* Our grid will be displayed using 3 rows */
  grid-template-rows: 1fr 1fr 1fr;
  /* Our grid will be displayed using 4 columns */
  grid-template-columns: 1fr 1fr 1fr 1fr 1fr;
  /* You can define a gap between your columns and your rows if you need to */
  gap: 0px;
  height: 100%;
}

/* This grid item will start at row 1 and column 4 and end at row 2 and column 5 */
#item-0 {
  background-color: #8bf7ba;
  grid-row-start: 1;
  grid-column-start: 4;
  grid-row-end: 2;
  grid-column-end: 5;
}

/* This grid item will start at row 2 and column 3 and end at row 3 and column 5 */
#item-1 {
  background-color: #bf9aa7;
  grid-row-start: 2;
  grid-column-start: 3;
  grid-row-end: 3;
  grid-column-end: 5;
}

/* This grid item will start at row 2 and column 2 and end at row 3 and column 3 */
#item-2 {
  background-color: #c7656e;
  grid-row-start: 2;
  grid-column-start: 2;
  grid-row-end: 3;
  grid-column-end: 3;
}

/* This grid item will start at row 1 and column 1 and end at row 2 and column 3 */
#item-3 {
  background-color: #b659df;
  grid-row-start: 1;
  grid-column-start: 1;
  grid-row-end: 2;
  grid-column-end: 3;
}

/* This grid item will start at row 3 and column 1 and end at row 4 and column 3 */
#item-4 {
  background-color: #be6b5e;
  grid-row-start: 3;
  grid-column-start: 1;
  grid-row-end: 4;
  grid-column-end: 3;
}

/* This grid item will start at row 3 and column 4 and end at row 4 and column 6 */
#item-5 {
  background-color: #5bb9d7;
  grid-row-start: 3;
  grid-column-start: 4;
  grid-row-end: 4;
  grid-column-end: 6;
}

/* This grid item will start at row 1 and column 5 and end at row 3 and column 6 */
#item-6 {
  background-color: #56adba;
  grid-row-start: 1;
  grid-column-start: 5;
  grid-row-end: 3;
  grid-column-end: 6;
}

/* This grid item will start at row 1 and column 3 and end at row 2 and column 4 */
#item-7 {
  background-color: #9cab58;
  grid-row-start: 1;
  grid-column-start: 3;
  grid-row-end: 2;
  grid-column-end: 4;
}

/* This grid item will start at row 3 and column 3 and end at row 4 and column 4 */
#item-8 {
  background-color: #8558ad;
  grid-row-start: 3;
  grid-column-start: 3;
  grid-row-end: 4;
  grid-column-end: 4;
}

/* This grid item will start at row 2 and column 1 and end at row 3 and column 2 */
#item-9 {
  background-color: #96b576;
  grid-row-start: 2;
  grid-column-start: 1;
  grid-row-end: 3;
  grid-column-end: 2;
}
</style>

結果のギャラリーは次のようになります。

長所:

  • Angry Tools CSS Gridには、選択可能ないくつかのテンプレートが付属しています

短所:

  • 全体的に最高のデザインではありません。正直なところ、それはかなり醜く、使いにくいことがあります
  • 初心者にはお勧めしません。上級開発者は、おそらく代わりにCSSLayoutGeneratorまたはGridLayoutItのいずれかを選択する必要があります
  • CSS出力を取得するにはスクロールする必要があります

ボーナス:CSSグリッドチートシート

CSSグリッドジェネレーターは、CSSプロパティに慣れていない場合に最適です。ただし、より高度な開発者になると、簡単なチートシートの方がおそらく便利な場合があります。

😇それがあなたを助けることができるなら、これが私が自分のために作ったものです:

gap行と列の間のギャップサイズを設定します。これは、次のプロパティの省略形ですrow-gapcolumn-gap
row-gapグリッド行間のギャップを指定します
column-gap列間のギャップを指定します
gridgrid-template-rowsの省略grid-template-columns形プロパティ:grid-template-areas、、、、、、grid-auto-rowsgrid-auto-columnsgrid-auto-flow
grid-areaグリッドレイアウトでのグリッドアイテムのサイズと位置を指定します。これは、次のプロパティの省略形のプロパティです:grid-row-start、、、grid-column-startgrid-row-endgrid-column-end
grid-auto-columnsグリッドコンテナの列のサイズを設定します
grid-auto-flow自動配置されたアイテムをグリッドに挿入する方法を制御します
grid-auto-rowsグリッドコンテナの行のサイズを設定します
grid-columnグリッドレイアウトでのグリッドアイテムのサイズと位置を指定します。これは、次のプロパティの省略形のプロパティです。grid-column-startgrid-column-end
grid-column-endアイテムがまたがる列の数、またはアイテムが終了する列行を定義します
grid-column-gapグリッドレイアウトの列間のギャップのサイズを定義します
grid-column-startアイテムが開始する列行を定義します
grid-gapグリッドレイアウトの行と列の間のギャップのサイズを定義し、次のプロパティの省略形のプロパティです。grid-row-gapgrid-column-gap
grid-rowグリッドレイアウトでのグリッドアイテムのサイズと位置を指定します。これは、次のプロパティの省略形のプロパティです。grid-row-startgrid-row-end
grid-row-endアイテムがまたがる行数、またはアイテムが終了する行行を定義します
grid-row-gapグリッドレイアウトの行間のギャップのサイズを定義します
grid-row-startアイテムが開始する行行を定義します
grid-template次のプロパティの省略形プロパティ:grid-template-rows、、grid-template-columnsgrid-template-areas
grid-template-areasグリッドレイアウト内の領域を指定します
grid-template-columnsグリッドレイアウトの列の数(および幅)を指定します
grid-template-rowsグリッドレイアウトの行の数(および高さ)を指定します

最高のCSSグリッドジェネレーターのこの簡単な比較が、お気に入りのジェネレーターをブックマークするのに役立つことを願っています。

また、CSSグリッドを扱うときに重要なアドバイスを提供できる場合は、時間をかけてください。これらのジェネレーターは、必要なレイアウトを段階的に取得し、複雑なソリューションに依存することを回避するのに役立つため、優れたオプションです。

読んでくれてありがとう!  

ソース:https ://blog.logrocket.com/comparing-best-css-grid-generators/

#css 

Comparing the best CSS grid generators

Grids, grids, grids. So many things we can do with them. But, so many properties we have to remember. 😅

If you are like me and you always have to resort to Google when using grids, the tricks we’ll cover in this guide will make your life as a developer much easier.

What are CSS grid generators?

A grid generator is a website you can use to generate a grid in a few clicks. But why should you care about them? In my case, I use them quite often when I want to design the layout of my websites or a complex responsive structure inside an interface. Grids are great because they help you achieve a lot with just a few CSS lines, which saves a lot of time.

In this article, we will compare the following CSS grid generators and list their pros and cons so that you can bookmark your favorite one:

  • CSS Grid Generator
  • CSS Layout Generator
  • Grid LayoutIt
  • Griddy
  • Cssgr.id
  • Angry Tools CSS Grid

Also, to save you time, I made a cheat sheet with the essential CSS grid properties you should remember. 🥳 This cheat sheet is available at the bottom of this article.

1. CSS Grid Generator

CSS Grid Generator

I put CSS Grid Generator first on my list because I use it the most. It is an open source project designed by Sarah Drasner (the code of the project is available here if you want to contribute).

To give you an example, I recently needed to generate a simple grid with two rows and three columns. I didn’t remember how to set a specific size for the row gap and the column gap. With CSS Grid Generator, I was able to easily create the structure I desired and move on to more complex tasks.

.parent {  display: grid;  grid-template-columns: repeat(3, 1fr);  grid-template-rows: repeat(2, 1fr);  grid-column-gap: 60px;  grid-row-gap: 30px; }

The final grid looked like this:

Example Of CSS Grid Generator

Pros:

  • The interface is user-friendly and the colors are well-chosen, making CSS Grid Generator an excellent tool for beginners who want to become more familiar with CSS grids
  • CSS Grid Generator can help you get the result you want for most use cases because you can specify the number of columns, rows, and gaps across your grids
  • Just hit one button to preview the code and copy it to your clipboard

Cons:

  • There is no template you can choose to save you time
  • You will not be able to generate complicated layouts

2. CSS Layout Generator

CSS Layout Generator

I could have put CSS Layout Generator first on the list. If you are looking to generate complicated grids all the time, this is probably the one you should bookmark. Developed by Braid Design System, CSS Layout Generator offers a wide range of options that will solve most headaches.

In my daily work, I use CSS Layout Generator templates a lot because they conveniently allow you to choose between a structure with a sidebar/container or a header/main/footer.

<section class="layout">
  <!-- The left sidebar where you can put your navigation items etc. -->
  <div class="sidebar">1</div>

  <!-- The main content of your website -->
  <div class="body">2</div>
</section>

<style>
.layout {
  width: 1366px;
  height: 768px;
  display: grid;
  /* This is the most important part where we define the size of our sidebar and body  */
  grid:
    "sidebar body" 1fr
    / auto 1fr;
  gap: 8px;
}

.sidebar {
  grid-area: sidebar;
}

.body {
  grid-area: body;
}
</style>

The Sidebar option looks like this:

Example Of CSS Layout Generator

Pros:

  • CSS Layout Generator allows you to choose between six standard templates to get started faster
  • There are many options to solve nearly all use cases
  • You can switch between grids and Flexbox, which is helpful to compare both options
  • The interface is excellent and user-friendly

Cons:

  • Because it offers so many options, CSS Layout Generator can be confusing for a beginner

3. Grid LayoutIt

Grid LayoutIt

Grid LayoutIt was developed by Leniolabs and is another grid generator that comes with many options. The code is available publicly on GitHub if you are interested in contributing.

Last week, a customer asked me to design an interface to display important metrics about his product (somewhat similar to Geckoboard). The layout he wanted was very precise but, thanks to LayoutIt, I generated the code in a few seconds.

<div class="container">
  <div class="metric-1"></div>
  <div class="metric-2"></div>
  <div class="metrics-3"></div>
  <div class="metric-4"></div>
  <div class="metric-5"></div>
  <div class="metric-6"></div>
</div>

<style>
.container {
  display: grid;
  grid-template-columns: 1fr 1fr 1fr;
  grid-template-rows: 1fr 1fr 1fr;
  gap: 20px 20px;
  grid-auto-flow: row;
  grid-template-areas:
    "metric-1 metric-1 metric-2"
    "metrics-3 metric-4 metric-2"
    "metric-5 metric-5 metric-6";
}
.metric-1 {
  grid-area: metric-1;
}
.metric-2 {
  grid-area: metric-2;
}
.metrics-3 {
  grid-area: metrics-3;
}
.metric-4 {
  grid-area: metric-4;
}
.metric-5 {
  grid-area: metric-5;
}
.metric-6 {
  grid-area: metric-6;
}
</style>

The resulting layout looked like this:

Example Of Grid LayoutIt

Pros:

  • Grid LayoutIt is intuitive to use and it provides many options
  • You can set your columns and your rows using pixels (px), fractionals (fr), and percentages (%)
  • Your layouts can be exported to CodePen, CodeSandbox, or StackBlitz in one click
  • The interface is well-designed, with a proper contrast between the options and the grid preview
  • Grid LayoutIt supports grid placement options

Cons:

  • This generator does not provide templates to save you time, which is the main reason why I put it third on the list

4. Griddy

Griddy

In my past experience, I spent a lot of time using Griddy. It is a little less easy to use than the CSS grid made by Sarah Drasner, but it offers more options.

For example, it allows you to easily generate a four column grid with three rows:

.container {
  display: grid;
  grid-template-columns: 1fr 300px 1fr 1fr;
  grid-template-rows: 2fr 100px 1fr;
  grid-column-gap: 10px
  grid-row-gap: 20px
  justify-items: stretch
  align-items: stretch
}

The resulting layout looks like this:

Example Of Griddy

Pros:

  • You can set your columns and your rows using pixels (px), fractionals (fr), and percentages (%)
  • The provided options are enough to solve most use cases and test different alignments. In a nutshell, it gets the job done

Cons:

  • It may be a question of taste, but the sidebar with the options is not the best interface for me. You have to scroll for a while to get what you are looking for
  • There are no templates to choose from
  • There is no minmax() function

5. Cssgr.id

CSS Grid

Cssgr.id is another great choice if you are looking for a grid generator that does not have too many options but enough to solve most use cases.

I used Cssgr.id last year to create a gallery because I remembered that it had a gallery template. In a few clicks, I was able to get something quite close to what I needed.

<div class="grid">
  <!-- This item will take 3 columns and 2 rows -->
  <div class="span-col-3 span-row-2">Item 1</div>

  <!-- This item will take 1 column and 1 row -->
  <div>Item 2</div>
  <div class="span-row-2">Item 3</div>
  <div class="span-row-3">Item 4</div>

  <!-- This item will take 1 column and 1 row -->
  <div>Item 5</div>

  <!-- This item will take 1 column and 1 row -->
  <div>Item 6</div>

  <!-- This item will take 1 column and 1 row -->
  <div>Item 7</div>

  <!-- This item will take 3 columns and 2 rows -->
  <div class="span-col-3 span-row-2">Item 8</div>

  <!-- This item will take 2 columns and 3 rows -->
  <div class="span-col-2 span-row-2">Item 9</div>

  <!-- This item will take 1 column and 1 row -->
  <div>Item 10</div>

  <!-- This item will take 1 column and 1 row -->
  <div>Item 11</div>

  <!-- This item will take 1 column and 1 row -->
  <div>Item 12</div>

  <!-- This item will take 1 column and 1 row -->
  <div>Item 13</div>

  <!-- This item will take 1 column and 1 row -->
  <div>Item 14</div>
</div>

<style>
.grid {
  display: grid;
  grid-template-columns: repeat(6, 1fr);
  grid-gap: 10px;
}

/* Items with this class will take 3 columns */
.span-col-3 {
  grid-column: span 3 / auto;
}

/* Items with this class will take 2 columns */
.span-col-2 {
  grid-column: span 2 / auto;
}

/* Items with this class will take 2 rows */
.span-row-2 {
  grid-row: span 2 / auto;
}

/* Items with this class will take 3 rows */
.span-row-3 {
  grid-row: span 3 / auto;
}
</style>

The gallery looked like this:

Example Of CSSGrid

Pros:

  • Cssgr.id comes with five practical starter layouts to choose from (3×3, football formation, header/footer, gallery, and generic website)
  • You can add placeholder text to see how it renders with some written content
  • It has a well-designed interface that can be easily configured

Cons:

  • It is not the grid generator with the most options

6. Angry Tools CSS Grid

Angry Tools CSS Grid

Angry Tools CSS Grid is the last CSS grid generator on our list. It can be handy, though probably less user-friendly than the other tools highlighted in this guide.

Angry Tools CSS Grid is also useful when generating galleries. By clicking on the squares, you can define their sizes and their directions (horizontally or vertically).

<div class="angry-grid">
  <div id="item-0">Item 0</div>
  <div id="item-1">Item 1</div>
  <div id="item-2">Item 2</div>
  <div id="item-3">Item 3</div>
  <div id="item-4">Item 4</div>
  <div id="item-5">Item 5</div>
  <div id="item-6">Item 6</div>
  <div id="item-7">Item 7</div>
  <div id="item-8">Item 8</div>
  <div id="item-9">Item 9</div>
</div>

<style>
.angry-grid {
  display: grid;
  /* Our grid will be displayed using 3 rows */
  grid-template-rows: 1fr 1fr 1fr;
  /* Our grid will be displayed using 4 columns */
  grid-template-columns: 1fr 1fr 1fr 1fr 1fr;
  /* You can define a gap between your columns and your rows if you need to */
  gap: 0px;
  height: 100%;
}

/* This grid item will start at row 1 and column 4 and end at row 2 and column 5 */
#item-0 {
  background-color: #8bf7ba;
  grid-row-start: 1;
  grid-column-start: 4;
  grid-row-end: 2;
  grid-column-end: 5;
}

/* This grid item will start at row 2 and column 3 and end at row 3 and column 5 */
#item-1 {
  background-color: #bf9aa7;
  grid-row-start: 2;
  grid-column-start: 3;
  grid-row-end: 3;
  grid-column-end: 5;
}

/* This grid item will start at row 2 and column 2 and end at row 3 and column 3 */
#item-2 {
  background-color: #c7656e;
  grid-row-start: 2;
  grid-column-start: 2;
  grid-row-end: 3;
  grid-column-end: 3;
}

/* This grid item will start at row 1 and column 1 and end at row 2 and column 3 */
#item-3 {
  background-color: #b659df;
  grid-row-start: 1;
  grid-column-start: 1;
  grid-row-end: 2;
  grid-column-end: 3;
}

/* This grid item will start at row 3 and column 1 and end at row 4 and column 3 */
#item-4 {
  background-color: #be6b5e;
  grid-row-start: 3;
  grid-column-start: 1;
  grid-row-end: 4;
  grid-column-end: 3;
}

/* This grid item will start at row 3 and column 4 and end at row 4 and column 6 */
#item-5 {
  background-color: #5bb9d7;
  grid-row-start: 3;
  grid-column-start: 4;
  grid-row-end: 4;
  grid-column-end: 6;
}

/* This grid item will start at row 1 and column 5 and end at row 3 and column 6 */
#item-6 {
  background-color: #56adba;
  grid-row-start: 1;
  grid-column-start: 5;
  grid-row-end: 3;
  grid-column-end: 6;
}

/* This grid item will start at row 1 and column 3 and end at row 2 and column 4 */
#item-7 {
  background-color: #9cab58;
  grid-row-start: 1;
  grid-column-start: 3;
  grid-row-end: 2;
  grid-column-end: 4;
}

/* This grid item will start at row 3 and column 3 and end at row 4 and column 4 */
#item-8 {
  background-color: #8558ad;
  grid-row-start: 3;
  grid-column-start: 3;
  grid-row-end: 4;
  grid-column-end: 4;
}

/* This grid item will start at row 2 and column 1 and end at row 3 and column 2 */
#item-9 {
  background-color: #96b576;
  grid-row-start: 2;
  grid-column-start: 1;
  grid-row-end: 3;
  grid-column-end: 2;
}
</style>

The resulting gallery looks like this:

Example Of Angry Tools

Pros:

  • Angry Tools CSS Grid comes with some templates you can choose from

Cons:

  • It does not have the best design overall. To be honest, it is quite ugly and can be hard to use
  • I would not recommend this tool for beginners. Advanced developers should also probably choose either CSS Layout Generator or Grid LayoutIt instead
  • You have to scroll to get the CSS outputs

BONUS: CSS grid cheat sheet

CSS grid generators are great when you are not familiar with CSS properties. But, as you become a more advanced developer, you may find that a quick cheat sheet is probably handier.

😇 If it can help you, here is the one I have made for myself:

gapSets the gap size between the rows and columns. It is a shorthand for the following properties: row-gap and column-gap
row-gapSpecifies the gap between the grid rows
column-gapSpecifies the gap between the columns
gridA shorthand property for: grid-template-rows, grid-template-columns, grid-template-areas, grid-auto-rows, grid-auto-columns, grid-auto-flow
grid-areaSpecifies a grid item’s size and location in a grid layout and is a shorthand property for the following properties: grid-row-start, grid-column-start, grid-row-end, grid-column-end
grid-auto-columnsSets the size for the columns in a grid container
grid-auto-flowControls how auto-placed items get inserted in the grid
grid-auto-rowsSets the size for the rows in a grid container
grid-columnSpecifies a grid item’s size and location in a grid layout and is a shorthand property for the following properties: grid-column-start, grid-column-end
grid-column-endDefines how many columns an item will span or on which column-line the item will end
grid-column-gapDefines the size of the gap between the columns in a grid layout
grid-column-startDefines on which column-line the item will start
grid-gapDefines the size of the gap between the rows and columns in a grid layout and is a shorthand property for the following properties: grid-row-gap, grid-column-gap
grid-rowSpecifies a grid item’s size and location in a grid layout and is a shorthand property for the following properties: grid-row-start, grid-row-end
grid-row-endDefines how many rows an item will span or on which row-line the item will end
grid-row-gapDefines the size of the gap between the rows in a grid layout
grid-row-startDefines on which row-line the item will start
grid-templateA shorthand property for the following properties: grid-template-rows, grid-template-columns, grid-template-areas
grid-template-areasSpecifies areas within the grid layout
grid-template-columnsSpecifies the number (and the widths) of columns in a grid layout
grid-template-rowsSpecifies the number (and the heights) of the rows in a grid layout

I hope this quick comparison of the best CSS grid generators helped you bookmark your favorite one.

Also, if I can give you a critical piece of advice when dealing with CSS grids: take your time. These generators are a great option because they can help you get the layouts you need step by step and avoid relying on a complicated solution.

Thank you for reading!  

Source: https://blog.logrocket.com/comparing-best-css-grid-generators/

#css 

Lawrence  Lesch

Lawrence Lesch

1664370906

JavaScript, SCSS Helpers for Rendering High-resolution Image Variants

retina.js

JavaScript, Sass, Less, and Stylus helpers for rendering high-resolution image variants

retina.js makes it easy to serve high-resolution images to devices with displays that support them. You can prepare images for as many levels of pixel density as you want and let retina.js dynamically serve the right image to the user.

How it works

There are 4 ways to use retina.js:

  1. Automatically swapping out src paths on img tags.
  2. Automatically swapping out background image URLs in inline styles.
  3. Manually specifying the location of a high-res image variant (works for src attributes and inline styles).
  4. Automatically creating media queries for CSS background images.

Img Tags

retina.js assumes you are using Apple's prescribed high-resolution modifiers (@2x, @3x, etc) to denote high-res image variants on your server. It also assumes that if you have prepared a variant for a given high-res environment, that you have also prepared variants for each environment below it. For example, if you have prepared 3x variants, retina.js will assume that you have also prepared 2x variants.

With this in mind, you'll specify your highest environment level with the data-rjs attribute and let retina.js take it from there.

Let's say you have an image on your page that looks like this:

<img src="/images/my_image.png" data-rjs="3" />

In this case, we've set our resolution cap at "3", denoting that we've prepared 3x and 2x image variants. When the page loads, retina.js will check the actual resolution of the device environment to decide whether it should really serve up a 3x image. If the user happens to be in a 2x environment, retina.js will serve up the 2x image instead, assuming it will find the image at /images/my_image@2x.png.

If the environment does have 3x capabilities, retina.js will serve up the 3x image. It will expect that url to be /images/my_image@3x.png. If the environment has the ability to display images at higher densities than 3x, retina.js will serve up the image of the highest resolution that you've provided, in this case 3x.

Inline Styles

Previous versions of retina.js were unable to target background images set via inline styles. Now, if you apply a data-rjs attribute to any kind of element other than an img, the script will target inline background images instead of src attributes.

So if you created an element like this:

<div style="background: url(/images/my_image.png)" data-rjs="3"></div>

retina.js would convert it to something like this:

<div style="background: url(/images/my_image@3x.png)" data-rjs="3"></div>

The logic behind image swapping is exactly the same when dealing with background images as it is when dealing with src attributes. If the user's environment only supports 2x variants, retina.js will load the 2x variant instead of the 3x.

Note that it is up to you in a case like this to correctly apply background sizing and any other necessary background-related styles to the element. retina.js will not affect these.

Manually Specifying a High-Res URL

In previous versions, you could tell the script where to find your high-res file by using the data-at2x attribute. Now, if you pass a URL to the data-rjs attribute, retina.js will use the image at the path you specify for all high-resolution environments instead of trying to dynamically serve an auto-suffixed image path based on the environment's capabilities. This will work for both src attributes on img tags and inline background images on all other tags.

For example, you might write something like this:

<img
  src="/images/my_image.png"
  data-rjs="/images/2x/my-image.png" />

<!-- or -->

<div
  style="background: url(/images/my_image.png)"
  data-rjs="/images/2x/my-image.png">
</div>

If the user then loads the page in any kind of high-resolution environment, they'll get the following:

<img
  src="/images/2x/my-image.png"
  data-rjs="/images/2x/my-image.png" />

<!-- or -->

<div
  style="background: url(/images/2x/my-image.png)"
  data-rjs="/images/2x/my-image.png">
</div>

Media Queries

retina.js comes with mixins for SCSS, Sass, Less, and Stylus. These mixins work similarly to the JavaScript version in that they will dynamically serve images for as many high-res environments as you've prepared image variants for. Previously, these mixins were named "at2x" but because they now serve images for multiple environments, they have been renamed "retina".

In each language, the retina mixin allows 4 parameters:

  1. path - The path to your standard resolution image.
  2. cap - Optional. The highest resolution level for which you have prepared images. Defaults to 2.
  3. size- Optional. A value to be applied to the background-size property. Defaults to auto auto.
  4. extras- Optional. Any other values to be added to the background property. Defaults to nothing.

Here is an example wherein we are specifying that we have prepared images for both 2x and 3x environments:

SCSS

#item {
  @include retina('/images/my_image.png', 3, cover, center center no-repeat);
}

Sass

#item
  +retina('/images/my_image.png', 3, cover, center center no-repeat)

Less

#item {
  .retina('/images/my_image.png', 3, cover, center center no-repeat);
}

Stylus

#item
  retina('/images/my_image.png', 3, cover, center center no-repeat)

Regardless of the dialect, the output is effectively the same:

#item {
  background: url("/images/my_image.png") center center no-repeat;
  background-size: cover;
}

@media all and (-webkit-min-device-pixel-ratio: 1.5),
       all and (-o-min-device-pixel-ratio: 3 / 2),
       all and (min--moz-device-pixel-ratio: 1.5),
       all and (min-device-pixel-ratio: 1.5) {
  #item {
    background: url("/images/my_image@2x.png") center center no-repeat;
    background-size: cover;
  }
}

@media (-webkit-min-device-pixel-ratio: 2), (min-resolution: 192dpi) {
  #item {
    background: url("/images/my_image@2x.png") center center no-repeat;
    background-size: cover;
  }
}

@media (-webkit-min-device-pixel-ratio: 3), (min-resolution: 288dpi) {
  #item {
    background: url("/images/my_image@3x.png") center center no-repeat;
    background-size: cover;
  }
}

Compatibility

retina.js is compatible with all modern browsers and should not throw errors in old browsers all the way back through IE6.

Installing & Launching

JavaScript

There are 2 ways to use the JavaScript version of retina.js:

  1. The old-school way (manually dropping the script into an html file).
  2. The new-school way (importing it into a larger JavaScript build process).

Old-School

To use retina.js the old-school way, download retina.min.js and put it on your server. Then, include the script in your html file at the bottom of your template, before your closing </body> tag.

<script type="text/javascript" src="/scripts/retina.min.js"></script>

Using this technique, retina.js will run automatically on page load. It will also create a globally available function called retinajs. Whenever you'd like to manually re-initialize the script, simply call window.retinajs().

If you don't pass any arguments to the retinajs function, it will only attempt to process images that have not previously been processed by the script. Optionally, you can pass a collection of HTML elements to the script, in which case it will only attempt to process elements in that collection, specifically the ones that have not been processed before. Your collection may take the form of an Array, NodeList, or jQuery selection.

retinajs();
// Finds all images not previously processed and processes them.

retinajs( [img, img, img] );
// Only attempts to process the images in the collection.

retinajs( $('img') );
// Same.

retinajs( document.querySelectorAll('img') );
// Same.

New-School

To use retina.js the new-school way, you'll want to require it (or import it if you're using ES6) into your Gulp/Webpack/Grunt/CommonJS/etc application. In this case, the script won't run automatically. Instead, it'll let you determine when you'd like it to run.

import retina from 'retina';

window.addEventListener('load', retina);

Notice that the retina function can be called as often as you need in order to re-initialize the image swapping.

If you don't pass any arguments to the retina function, it will only attempt to process images that have not previously been processed by the script. Optionally, you can pass a collection of HTML elements to the script, in which case it will only attempt to process elements in that collection, specifically the ones that have not been processed before. Your collection may take the form of an Array, NodeList, or jQuery selection.

retina();
// Finds all images not previously processed and processes them.

retina( [img, img, img] );
// Only attempts to process the images in the collection.

retina( $('img') );
// Same.

retina( document.querySelectorAll('img') );
// Same.

CSS Preprocessors

The process for including the CSS mixins is relatively straightforward. Here is a breakdown for each:

SCSS

Add the @mixin retina( ... ) mixin from _retina.scss to your SCSS stylesheet (or reference it in an @import). In your stylesheet, call the mixin using @include retina( ... ) anywhere instead of using background or background-image.

Sass

Add the =retina( ... ) mixin from _retina.sass to your Sass stylesheet (or reference it in an @import). In your stylesheet, call the mixin using +retina( ... ) anywhere instead of using background or background-image.

Less

Add the .retina( ... ) mixin from retina.less to your Less stylesheet (or reference it in an @import). In your stylesheet, call the mixin using .retina( ... ) anywhere instead of using background or background-image.

Stylus

Add the retina( ... ) mixin from retina.styl to your Stylus stylesheet (or reference it in an @import). In your stylesheet, call the mixin using retina( ... ) anywhere instead of using background or background-image.

Considerations for Ruby on Rails 3+

...or any framework that embeds some digest/hash to the asset URLs based on the contents, e.g. /images/image-{hash1}.jpg.

The problem with this is that the high-resolution version would have a different hash, and would not conform to the usual pattern, i.e. /images/image@2x-{hash2}.jpg. So automatic detection would fail because retina.js would check the existence of /images/image-{hash1}@2x.jpg.

There's no way for retina.js to know beforehand what the high-resolution image's hash would be without some sort of help from the server side. So in this case, there are a couple of options for handling it:

Bypass Digesting

One potential method is to bypass digesting altogether by implementing a process like team-umlaut's asset compile rake file which will generate non-digested asset files as necessary.

Use Manual Paths

Although it's not quite as fancy as dynamically serving up files based on the resolution of the user's environment, this may be a good time to pass a URL string to the data-rjs attribute so that you can manually tell retina.js exactly where to look for a high-resolution variant of your image.

Download Details:

Author: Strues
Source Code: https://github.com/strues/retinajs 
License: MIT license

#javascript #scss #sass #image