Introduction
In this article we will learn about various ways to define arrays in JavaScript. JavaScript arrays are used to store multiple values in a single variable.
Let's look at the following snippets.
<!DOCTYPE html>
<html xmlns="http://www.w3.org/1999/xhtml">
<head runat="server">
</head>
<body>
<form id="form1" runat="server">
<script>
var arr = ['x', 'y', 'z']; 1
alert(arr[0]);
</script>
</form>
</body>
</html>
Here we have defined an array using the “var” keyword. Then we are accessing the element of the array at index 0.
![var keyword]()
Now we will use an Array() function to create an array.
<!DOCTYPE html>
<html xmlns="http://www.w3.org/1999/xhtml">
<head runat="server">
</head>
<body>
<form id="form1" runat="server">
<script>
var arr = new Array("Ramesh", "Suresh", "Hareesh");
alert(arr[0]);
</script>
</form>
</body>
</html>
In the following snippet, we are not creating an element at the time of Array () creation.
<!DOCTYPE html>
<html xmlns="http://www.w3.org/1999/xhtml">
<head runat="server">
</head>
<body>
<form id="form1" runat="server">
<script>
var arr = new Array();
arr[0] = 100;
arr[1] = "Rama";
arr[2] = "sagar";
alert(arr[1] + arr[2]);
</script>
</form>
</body>
</html>
Summary
In this article we learned various various ways to define arrays in JavaScript. In future articles we will learn some more basic concepts of JavaScript.