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A simple introduction to the use of several class selectors in JQuery_jquery

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Release: 2016-05-16 17:40:38
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复制代码 代码如下:

<%@ Page Language="C#" AutoEventWireup="true" CodeBehind="TestClassSelector.aspx.cs" Inherits="WebApplication1.TestClassSelector" %>











This is the first div


This is the second div



This is the first span



This is the first span eric sun class.




This is the eric sun class.










复制代码 代码如下:

$(".first_div, .first_span")

将包含有.first_div 或者 .first_span" 的对象都取到。 这里取到 4 个 对象。
此处的Html对应
复制代码 代码如下:


This is the first div



This is the first span



This is the first span eric sun class.


复制代码 代码如下:

$(".first_div .first_span")

将以 .first_div 为类的控件 下的 以 .first_span 为类 的对象取到(类与类之间带有空格 逐层取)。 这里只取到 1 个。
对应的 className="first_span" 此处的Html对应
复制代码 代码如下:



This is the first span



复制代码 代码如下:

$(".first_span.eric_sun_class")

将包含有.first_span 并且同时包含有 .eric_sun_class 类的 对象取到(类与类之间没有空格 类似于 ‘与' 操作)。 这里只取到1个。
对应的 className="first_span eric_sun_class" 此处的Html 对应
复制代码 代码如下:


This is the first span eric sun class.

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