jQuery.isArray( obj )Returns: boolean

Description: Determine whether the argument is an array.

$.isArray() returns a Boolean indicating whether the object is a JavaScript array (not an array-like object, such as a jQuery object).

Example:

Finds out if the parameter is an array.

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<!DOCTYPE html>
<html>
<head>
<script src="http://code.jquery.com/jquery-latest.js"></script>
</head>
<body>
Is [] an Array? <b></b>
<script>$("b").append( "" + $.isArray([]) );</script>
</body>
</html>

Demo: