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The not () method usage instance in jquery _jquery

Source: Internet
Author: User
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This example describes the use of the Not () method in jquery. Share to everyone for your reference. The specific analysis is as follows:

This method deletes an element that matches the specified expression.

Grammatical structure One:

Copy Code code as follows:
$ (selector). Not (expr)

Parameter list:

Parameters Describe
Expr A string value that defines the filter expression.

Instance code:

Copy Code code as follows:

<! DOCTYPE html>
<meta charset= "Utf-8" >
<meta name= "Author" content= "http://www.jb51.net/"/>
<title>not () function-cloud-dwelling community </title>
<script type= "Text/javascript" src= "Mytest/jquery/jquery-1.8.3.js" ></script>
<script type= "Text/javascript" >
$ (document). Ready (function () {
Alert ($ ("Li"). Not (". js"). Length)
})
</script>
<body>
<div>
<ul>
<li>html Zone </li>
<li class= "JS" >javascript zone </li>
<li>div+css Zone </li>
<li>jquery Zone </li>
</ul>
</div>
</body>

The above code returns the number of LI elements in the jquery object after you delete the class named JS.

Grammatical structure two:

Parameter list:

Parameters Describe
Element The DOM element to be deleted.

Instance code:

Copy Code code as follows:

<! DOCTYPE html>
<meta charset= "Utf-8" >
<meta name= "Author" content= "http://www.jb51.net/"/>
<title>not () function cloud-dwelling community </title>
<script type= "Text/javascript" src= "Mytest/jquery/jquery-1.8.3.js" ></script>
<script type= "Text/javascript" >
$ (document). Ready (function () {
Alert ($ ("Li"). Not (document.getElementById ("JS")). length);
})
</script>
<body>
<div>
<ul>
<li>html Zone </li>
<li id= "JS" >javascript zone </li>
<li>div+css Zone </li>
<li>jquery Zone </li>
</ul>
</div>
</body>

The code above can return the number of LI elements in a jquery object that deletes the ID value of JS.

Grammatical structure three:

Copy Code code as follows:
$ (selector). Not (function)

Parameter list:

Parameters Describe
function (Index) used to traverse the collection of elements function, and returns an element to be deleted .
This function takes a parameter index, which is the index of the element in the jquery collection.
in a function, this refers to the current DOM element.

Instance code:

Copy Code code as follows:

<! DOCTYPE html>
<meta charset= "Utf-8" >
<meta name= "Author" content= "http://www.jb51.net/"/>
<title>not () function cloud-dwelling community </title>
<script type= "Text/javascript" src= "Mytest/jquery/jquery-1.8.3.js" ></script>
<script type= "Text/javascript" >
$ (document). Ready (function () {
Alert ($ ("Li"). Not (function () {return $ (this). attr ("class") = = "JS"}). length);
})
</script>
<body>
<div>
<ul>
<li>html Zone </li>
<li class= "JS" >javascript zone </li>
<li>div+css Zone </li>
<li>jquery Zone </li>
</ul>
</div>
</body>

I hope this article will help you with your jquery programming.

This article is an English version of an article which is originally in the Chinese language on aliyun.com and is provided for information purposes only. This website makes no representation or warranty of any kind, either expressed or implied, as to the accuracy, completeness ownership or reliability of the article or any translations thereof. If you have any concerns or complaints relating to the article, please send an email, providing a detailed description of the concern or complaint, to info-contact@alibabacloud.com. A staff member will contact you within 5 working days. Once verified, infringing content will be removed immediately.

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