Javascript array declaration or creations & adding elements

How to create array and add element

We can create arrays in JavaScript in different ways. 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); // Array has 5 elements

var my_array=['4th']; // array with single element

Crating Array from a String

More practical requirement will be crating array from a string. You can read more on this on our tutorial on split.

More on JavaScript Arrays : Create , display and Applications