jQuery.type () method
Examples
This parameter is a regular expression
This is a regular expression? <B> </ b> <script> $ (function () {$ ( "B" ). Append ( "" + JQuery. Type (/ test /) );}) </ Script>
try it"
Definition and Usage
$ .type () Function is used to determine the type of JavaScript built-in objects and returns the lowercase type name.
If the object is undefined or null, then returns the corresponding "undefined" or "null"
$.type( undefined ) === "undefined" $.type() === "undefined" $.type( window.notDefined ) === "undefined" $.type( null ) === "null"
If the object has an internal property [[Class]] and a browser's built-in objects [[Class]] the same, we return the corresponding [[Class]] name.
$.type( true ) === "boolean" $.type( 3 ) === "number" $.type( "test" ) === "string" $.type( function(){} ) === "function" $.type( [] ) === "array" $.type( new Date() ) === "date" $.type( new Error() ) === "error" // jQuery 1.9 新增支持 $.type( /test/ ) === "regexp"
grammar
$.type( obj )
参数 | 描述 |
---|---|
obj | 任意类型 需要确定类型的任意对象。 |