4 Different Methods to Search an Array in JavaScript

In this story, we will see about the different methods in JavaScript to search an item in an array.

There are four different methods to search an array in JavaScript. They are as follows:

• Filter
• Find
• Includes
• IndexOf

From the above different methods, we want to choose the method depends upon our usecase.

Now let’s get deep into the topic.

Array.filter()

Array.filter() method is used to find an element in an array under specific condition. Let’s see an example that print all the elements in an array of number that is greater than 10.

const array = [10, 11, 3, 20, 5];

const greaterThanTen = array.filter(element => element > 10);

console.log(greaterThanTen) //[11, 20]

Syntax:

let newArray = array.filter(callback);

Where

• newArray - It is the array which is returned by the function.
• array- It is an array in which the filter method is called.
• callback- It is a callback function which is applied to all the elements in an array.

#web-development #javascript #nodejs #array-methods

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Fill and Filter in Array in JavaScript

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.

Array.fill():

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

JavaScript Arrays Tutorial. DO NOT MISS!!!

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

4 Different Methods to Search an Array in JavaScript

In this story, we will see about the different methods in JavaScript to search an item in an array.

There are four different methods to search an array in JavaScript. They are as follows:

• Filter
• Find
• Includes
• IndexOf

From the above different methods, we want to choose the method depends upon our usecase.

Now let’s get deep into the topic.

Array.filter()

Array.filter() method is used to find an element in an array under specific condition. Let’s see an example that print all the elements in an array of number that is greater than 10.

const array = [10, 11, 3, 20, 5];

const greaterThanTen = array.filter(element => element > 10);

console.log(greaterThanTen) //[11, 20]

Syntax:

let newArray = array.filter(callback);

Where

• newArray - It is the array which is returned by the function.
• array- It is an array in which the filter method is called.
• callback- It is a callback function which is applied to all the elements in an array.

#web-development #javascript #nodejs #array-methods

Learn Arrays And Array Methods in JavaScript

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

Codeigniter 4 Autocomplete Textbox From Database using Typeahead JS - Tuts Make

Autocomplete textbox search from database in codeigniter 4 using jQuery Typeahead js. In this tutorial, you will learn how to implement an autocomplete search or textbox search with database using jquery typehead js example.

This tutorial will show you step by step how to implement autocomplete search from database in codeigniter 4 app using typeahead js.

Autocomplete Textbox Search using jQuery typeahead Js From Database in Codeigniter

• Download Codeigniter Latest
• Basic Configurations
• Create Table in Database
• Setup Database Credentials
• Create Controller
• Create View
• Create Route
• Start Development Server

https://www.tutsmake.com/codeigniter-4-autocomplete-textbox-from-database-using-typeahead-js/

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