How to use jQuery content filter

This time I will show you how to use jQuery content filter and what are the precautions for using jQuery content filter. The following 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!

Recommended reading:

How to build a vue2.0 boostrap project

How to use vue to set proxyTable parameters across domains

The above is the detailed content of How to use jQuery content filter. For more information, please follow other related articles on the PHP Chinese website!