How to determine whether a jquery array contains an element

How to determine whether a jquery array contains an element: First create a front-end sample file; then define a set of array data; finally use the "$.inArray("js", arr);" method to determine whether the array contains Just include an element.

The operating environment of this article: windows7 system, jquery1.2.6, Dell G3 computer.

JQuery determines whether an element is included in the array $.inArray("js", arr);

var arr = [ "xml", "html", "css", "js" ];  
$.inArray("js", arr);  //返回 3,

If it is not included in the array, it returns -1;

Related introduction:

jQuery is a JavaScript function library.

The jQuery library includes the following features:

• HTML element selection

• HTML element manipulation

• CSS Operation

• HTML Event Function

• JavaScript Special Effects and Animation

• HTML DOM traversal and modification

• AJAX

• Utilities

Recommended: "jquery video Tutorial》

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