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How to create array and add element

We can create arrays in JavaScript in different ways. Handling of arrays using JavaScript is required in many applications. If we are processing a form then elements of the form can be managed as part of an array. We will learn some different points on use of arrays and before that we will learn some basics of JavaScript array.

How to create arrays in JavaScript?

We can declare an array like this

var scripts = new Array();


We can add elements to this array like this

scripts[0] = "PHP";
scripts[1] = "ASP";
scripts[2] = "JavaScript";
scripts[3] = "HTML";


Now our array scrips has 4 elements inside it and we can print or access them by using their index number. Note that index number starts from 0. To get the third element of the array we have to use the index number 2 . Here is the way to get the third element of an array.

document.write(scripts[2]);


We also can create an array like this

var no_array = new Array(21, 22, 23, 24, 25);

How to display elements of an array

Further readings
Declaring array in JavaScript
Displaying elements of an array by looping through
join():Displaying elements of an array using join() function
sort():Sorting of elements of an array using function
length:Length property to get the total number of elements in an array
reverse():Reversing the elements of an array
pop():Removeing last element of an array by using pop()
shift():Removeing first element of an array using shift()
push():Adding elements to array using push()
unshift():Adding elements to array using unshift()
splice():Add replace remove elements from an array using splice()
split():Creating array by splitting string variable
 
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