jQuery: Detailed explanation of the use of gt(index) selector-JS Tutorial-php.cn

jQuery: Detailed explanation of the use of gt(index) selector

黄舟

Release： 2017-06-23 10:14:09

Original

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There is a selector in jQuery: $(“:gt(index)”).

index starts from 0

means selecting elements greater than index

For example: $("tr:gt(2)"),

means Select

starting from the 4th tr element: Let me give you an example:

 <!DOCTYPE html><html>
    <head>
        <meta charset="UTF-8">
        <title></title>
                <style type="text/css">
            p{                float: left;                width: 30px;                border: 1px solid;            }
        </style>
        <script src="jquery-1.12.3.min.js" type="text/javascript" charset="utf-8"></script>
    </head>
    <body>
        <p class="demo">123</p>
        <p class="demo">123</p>
        <p class="demo">123</p>
        <p class="demo">123</p>
        <p class="demo">123</p>
        <p class="demo">123</p>
        <p class="demo">123</p>
        <p class="demo">123</p>
        <p class="demo">123</p>
        <p class="demo">123</p>
    </body>
        <script type="text/javascript">
            $(".demo:gt(2)").css("color","red");        </script></html>

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The result is that starting from the fourth p tag, the content is red. index starts from 0.

Look at the effect

jQuery: Detailed explanation of the use of gt(index) selector

This method selects all elements that match a value greater than the specified index: the index value starts counting from 0

<!DOCTYPE html>
<html>
<head>
<title>Insert you title</title>
<meta http-equiv=&#39;description&#39; content=&#39;this is my page&#39;>
<meta http-equiv=&#39;keywords&#39; content=&#39;keyword1,keyword2,keyword3&#39;>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8">
<script type=&#39;text/javascript&#39; src=&#39;./js/jquery-1.12.1.min.js&#39;></script>
<script type=&#39;text/javascript&#39;>
    $(function(){
       var size = $(&#39;#list li:gt(3)&#39;).size();
       alert(size);
    });    
</script>
</head>
<body>
    <ul id=&#39;list&#39;>
        <li></li>
        <li></li>
        <li></li>
        <li></li>
        <li></li>
        <li></li>
        <li></li>
        <li></li>
        <li></li>
        <li></li>
    </ul>
</body>
</html>

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Overview

Match all elements greater than the given index value

Parameters

indexNumberV1.0

Start counting from 0

Example

Description:

Find the second and third rows, that is, the index values are 1 and 2, that is, greater than 0

HTML code:

<table> 
<tr>
<td>Header 1</td>
</tr> 
<tr>
<td>Value 1</td>
</tr> 
<tr>
<td>Value 2</td>
</tr> 
</table>

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jQuery Code:

$("tr:gt(0)")

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Result:

[ <tr><td>Value 1</td></tr>, <tr><td>Value 2</td></tr> ]

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