This time I will bring you a detailed explanation of the method of using jQuery content filter, and what are the precautions when using jQuery content filter. Here is a practical case, let's take a look.
1 Introduction
The content filter filters through the text content contained in DOM elements and whether they contain matching elements. There are 4 types of content filters: :contains(text)
, :empty
, :has(selector)
and :parent
, as follows shown in the table.
Filter | Description | Example |
contains(text) | Match elements that contain the given text | $("li:contains('DOM')") //Match li elements that contain "DOM" text content |
:empty | Matches all empty elements that do not contain child elements or text | $("td:empty") //Match units that do not contain child elements or text Grid |
:has(selector) | Matches elements containing elements matched by the selector | $("td:has(p)") //Match cells containing tags in the cells of the table |
:parent | Match elements containing child elements or text | $("td: parent") //Match cells that are not empty, that is, the cell also includes sub-elements or text |
Second Application
Apply the content filter to match cells that are empty, cells that are not empty, and cells that contain the specified text
Three codes
<script language="javascript" src="JS/jquery-3.1.1.min.js"></script> <table width="98%" border="0" align="center" cellpadding="0" cellspacing="1" bgcolor="#3F873B"> <tr> <td width="11%" height="27">编号</td> <td width="14%">祝福对象</td> <td width="12%">祝福者</td> <td width="33%">字条内容</td> <td width="30%">发送时间</td> </tr> <tr> <td height="27">1</td> <td>琦琦</td> <td>妈妈</td> <td>愿你健康快乐的成长!</td> <td>2011-07-05 13:06:06</td> </tr> <tr> <td height="27">1</td> <td>wgh</td> <td>爸爸</td> <td>愿你健康快乐的成长!</td> <td>2011-07-05 13:06:06</td> </tr> <tr> <td height="27">1</td> <td>花花</td> <td>wgh</td> <td>愿你健康快乐的成长!</td> <td>2011-07-05 13:06:06</td> </tr> <tr> <td height="27">1</td> <td>科科</td> <td>wgh</td> <td></td> <td>2011-07-05 13:06:06</td> </tr> </table> <script type="text/javascript"> $(document).ready(function() { $("td:parent").css("background-color","#E8F3D1"); //为不为空的单元格设置背景颜色 $("td:empty").html("暂无内容"); //为空的单元格添加默认内容 $("td:contains('wgh')").css("color","red"); //将含有文本wgh的单元格的文字颜色设置为红色 }); </script>
Four running results
I believe you have mastered the method after reading the case in this article. For more exciting information, please pay attention to other related articles on the php Chinese website!
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