jQuery.type()
jQuery.type( obj ) Returns: String
Description: Determine the internal JavaScript [[Class]] of an object.
-
version added: 1.4.3jQuery.type( obj )
objObject to get the internal JavaScript [[Class]] of.
A number of techniques are used to determine the exact return value for an object. The [[Class]] is determined as follows:
- If the object is undefined or null, then "undefined" or "null" is returned accordingly.
- If the object has an internal [[Class]] equivalent to one of the browser's built-in objects, the associated name is returned. (More details about this technique.)
- jQuery.type(true) === "boolean"
- jQuery.type(3) === "number"
- jQuery.type("test") === "string"
- jQuery.type(function(){}) === "function"
- jQuery.type([]) === "array"
- jQuery.type(new Date()) === "date"
- jQuery.type(/test/) === "regexp"
- Everything else returns "object" as its type.
Example:
Find out if the parameter is a RegExp.
<!DOCTYPE html>
<html>
<head>
<script src="http://code.jquery.com/jquery-1.7rc2.js"></script>
</head>
<body>
Is it a RegExp? <b></b>
<script>$("b").append( "" + jQuery.type(/test/) );</script>
</body>
</html>