1602154740
By the word Array methods, I mean the inbuilt array functions, which might be helpful for us in so many ways. So why not just explore and make use of them, to boost our productivity.
Let’s see them together one by one with some amazing examples.
The
_fill()_
method changes all elements in an array to a static value, from a start index (default_0_
) to an end index (default_array.length_
). It returns the modified array.
In simple words, it’s gonna fill the elements of the array with whatever sets of params, you pass in it. Mostly we pass three params, each param stands with some meaning. The first param value: what value you want to fill, second value: start range of index(inclusive), and third value: end range of index(exclusive). Imagine you are going to apply this method on some date, so that how its gonna look like eg: array.fill(‘Some date’, start date, end date).
NOTE: Start range is inclusive and end range is exclusive.
Let’s understand this in the below example-
//declare array
var testArray = [2,4,6,8,10,12,14];
console.log(testArray.fill("A"));
When you run this code, you gonna see all the elements of testArray
will be replaced by 'A'
like [“A”,"A","A","A","A","A","A"]
.
#javascript-tips #array-methods #javascript-development #javascript #arrays
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Learn JavaScript Arrays
📺 The video in this post was made by Programming with Mosh
The origin of the article: https://www.youtube.com/watch?v=oigfaZ5ApsM&list=PLTjRvDozrdlxEIuOBZkMAK5uiqp8rHUax&index=4
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#arrays #javascript #javascript arrays #javascript arrays tutorial
1594911120
In JavaScript, an array is a data structure that contains list of elements which store multiple values in a single variable. The strength of JavaScript arrays lies in the array methods. Array methods are functions built-in to JavaScript that we can apply to our arrays — Each method has a unique function that performs a change or calculation to our array and saves us from writing common functions from scratch.
In this video we are going to learn arrays and array methods like sort(), reverse(), join(), split(), pop(), push(), shift(), unshift(), toString(), delete array, etc…
#javascript #arrays #array methods #programming
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The easiest approach to use javascript built-in method String.split().
#javascript #javascript string #string to array #morioh #array
1596298980
Arrays are one of the most common things that you’re going to use as a programmer. So, I’m going to explain nine JavaScript array methods that are going to make your life so much easier and more enjoyable.
To get started I just have an array of items, that we’re going to use for all these different array methods. Without wasting much time, let’s dive deep in to the pool of arrays (wink…)
const arrayItems = [
{name: 'cheese cake', price: 25},
{name: 'ham burger', price: 30},
{name: 'cheesy tacos', price: 20},
{name: 'beef burito', price: 18},
{name: 'maxican chille rice', price: 15},
{name: 'hot chocolate', price: 12},
{name: 'apple frudge', price: 28},
{name: 'chicken lassagna', price: 35},
]
So let’s assume that we want to get all the items in this list that are less than or equal to 26 dollars of price. All we need to use is the filter method to filter out everything that’s under 26 dollars. So, let’s just say that, we have a variable which is going to be filteredItems. The filter method just takes a single function which is going to have one parameter.
const filteredItems = arrayItems.filter((item) => {
return item.price <= 26;
})
#web-development #javascript #arrays #array-methods