javascript 第27节 jQuery选择器

下面的html需要以下2个文件：

1.style.css

div,span,p {
	140px;
	height:140px;
	margin:5px;
	background:#aaa;
	border:#000 1px solid;
	float:left;
	font-size:17px;
	font-family:Verdana;
}
div.mini { 
	55px;
	height:55px;
	background-color: #aaa;
	font-size:12px;
}
div.hide { 
	display:none;
}

 2.main.js

$(function () {

	function moveSpan() {
        $("#mover").slideToggle(3000, moveSpan);
	}
	 
	moveSpan();
})

 3.html

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
 <meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
 <title>基本选择器</title>
 <link rel="stylesheet" type="text/css" href="style.css" />
 <script type="text/javascript" src="jquery-1.7.2.js"></script>
 <script type="text/javascript"> 
    $(function () {
	        $("#but1").click(function() {
			     $("#one").css("background-color","#bfa");	
			});
			 $("#but2").click(function() {
			     $(".one").css("background-color","#bfa");	
			});
			 $("#but3").click(function() {
			     $("div").css("background-color","#bfa");	
			});
			 $("#but4").click(function() {
			     $("*").css("background-color","#bfa");	
			});

			$("#but5").click(function() {
			     $("#one,.mini").css("background-color","#bfa");	
			});
	   
	
	})
 </script>
</head>
<body>
<h3>基本选择器.</h3>

<!-- 控制按钮 -->
<input type="button" value="id是one的元素" id="but1" />
<input type="button" value="class是one的元素" id="but2" />
<input type="button" value="div元素" id="but3" />
<input type="button" value="所有元素" id="but4" />
<input type="button" value="id是one,class是mini" id="but5" />

<br /><br />

<!-- 测试的元素 -->
<div class="one" id="one" >
	id为one,class为one的div
	<div class="mini">class为mini</div>
</div>

<div class="one"  id="two" title="test" >
	id为two,class为one,title为test的div.
	<div class="mini"  title="other">class为mini,title为other</div>
	<div class="mini"  title="test">class为mini,title为test</div>
</div>

<div class="one">
	<div class="mini">class为mini</div>
	<div class="mini">class为mini</div>
	<div class="mini">class为mini</div>
	<div class="mini"></div>
</div>

<div class="one">
	<div class="mini">class为mini</div>
	<div class="mini">class为mini</div>
	<div class="mini">class为mini</div>
	<div class="mini"  title="tesst">class为mini,title为tesst</div>
</div>


<div style="display:none;"  class="none">
	style的display为"none"的div
</div>

<div class="hide">class为"hide"的div</div>

<div>
	包含input的type为"hidden"的div<input type="hidden" size="8"/>
</div>

<span id="mover">span元素.</span>

</body>
</html>

 rs:

4.html

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
 <meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
 <title>基本过滤选择器</title>
 <link rel="stylesheet" type="text/css" href="style.css" />
 <script type="text/javascript" src="jquery-1.7.2.js"></script>
 <script type="text/javascript" src="main.js"></script>
 <script type="text/javascript"> 
    $(function () {
	        $("#but1").click(function() {
			     $("div:first").css("background-color","#bfa");	
			});
			 $("#but2").click(function() {
			     $("div:last").css("background-color","#bfa");	
			});
			$("#but3").click(function() {
			     $("div:not(#one)").css("background-color","#bfa");	
			});

			$("#but4").click(function() {
			     $("div:eq(3)").css("background-color","#bfa");	
			});

			$("#but5").click(function() {
			     $("div:odd").css("background-color","#bfa");	
			});
			$("#but6").click(function() {
			     $("div:even").css("background-color","#bfa");	
			});

			$("#but7").click(function() {
			     $(":header").css("background-color","#bfa");	
			});

			$("#but8").click(function() {
			     $(":animated").css("background-color","#bfa");	
			});


			
	
	})
 </script>
</head>
<body>
<h3>基本过滤选择器.</h3>

<!-- 控制按钮 -->
<input type="button" value="第一个div元素" id="but1" />
<input type="button" value="最后一个div元素" id="but2" />
<input type="button" value="不包含id=one的div元素" id="but3" />
<input type="button" value="索引是3的div元素" id="but4" />
<input type="button" value="索引是奇数div元素" id="but5" />
<input type="button" value="索引是偶数div元素" id="but6" />
<input type="button" value="标题元素" id="but7" />
<input type="button" value="动画元素" id="but8" />

<br /><br />

<!-- 测试的元素 -->
<div class="one" id="one" >
	id为one,class为one的div
	<div class="mini">class为mini</div>
</div>

<div class="one"  id="two" title="test" >
	id为two,class为one,title为test的div.
	<div class="mini"  title="other">class为mini,title为other</div>
	<div class="mini"  title="test">class为mini,title为test</div>
</div>

<div class="one">
	<div class="mini">class为mini</div>
	<div class="mini">class为mini</div>
	<div class="mini">class为mini</div>
	<div class="mini"></div>
</div>

<div class="one">
	<div class="mini">class为mini</div>
	<div class="mini">class为mini</div>
	<div class="mini">class为mini</div>
	<div class="mini"  title="tesst">class为mini,title为tesst</div>
</div>


<div style="display:none;"  class="none">
	style的display为"none"的div
</div>

<div class="hide">class为"hide"的div</div>

<div>
	包含input的type为"hidden"的div<input type="hidden" size="8"/>
</div>

<span id="mover">span元素.</span>

</body>
</html>

 rs:

5.html

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
 <meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
 <title>层次选择器</title>
 <link rel="stylesheet" type="text/css" href="style.css" />
 <script type="text/javascript" src="jquery-1.7.2.js"></script>
 <script type="text/javascript"> 
    $(function () {
	      $("#but1").click(function() {
			     $("body div").css("background-color","#bfa");	
			});

			$("#but2").click(function() {
			     $("body>div").css("background-color","#bfa");	
			});

			$("#but3").click(function() {
			     $("#one + div").css("background-color","#bfa");	
			});

			$("#but4").click(function() {
			     $("#one ~ div").css("background-color","#bfa");	
			});
			
	
	})
 </script>
</head>
<body>
<h3>层次选择器.</h3>

<!-- 控制按钮 -->
<input type="button" value="body下div元素" id="but1" />
<input type="button" value="body下div子元素" id="but2" />
<input type="button" value="id是one的后div元素" id="but3" />
<input type="button" value="id是one的后所有div元素" id="but4" />

<br /><br />

<!-- 测试的元素 -->
<div class="one" id="one" >
	id为one,class为one的div
	<div class="mini">class为mini</div>
</div>

<div class="one"  id="two" title="test" >
	id为two,class为one,title为test的div.
	<div class="mini"  title="other">class为mini,title为other</div>
	<div class="mini"  title="test">class为mini,title为test</div>
</div>

<div class="one">
	<div class="mini">class为mini</div>
	<div class="mini">class为mini</div>
	<div class="mini">class为mini</div>
	<div class="mini"></div>
</div>

<div class="one">
	<div class="mini">class为mini</div>
	<div class="mini">class为mini</div>
	<div class="mini">class为mini</div>
	<div class="mini"  title="tesst">class为mini,title为tesst</div>
</div>


<div style="display:none;"  class="none">
	style的display为"none"的div
</div>

<div class="hide">class为"hide"的div</div>

<div>
	包含input的type为"hidden"的div<input type="hidden" size="8"/>
</div>

<span id="mover">span元素.</span>

</body>
</html>

 rs:

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原文地址：https://www.cnblogs.com/feilongblog/p/4748117.html