selector3.html
<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8">
<title>基本过滤选择器</title>
<link rel="stylesheet" type="text/css" href="../css/style.css">
<script type="text/javascript" src="../js/jquery-1.8.3.js"></script>
<script type="text/javascript">
$(function() {
$("#btn1").click(function() {
$("body div:first").css("background-color","#40E0D0");
});
$("#btn2").click(function() {
$("body div:last").css("background-color","#40E0D0");
});
$("#btn3").click(function() {
$("body div:odd").css("background-color","#40E0D0");
});
$("#btn4").click(function() {
$("body div:even").css("background-color","#40E0D0");
});
});
</script>
</head>
<body>
<input type="button" id="btn1" value="body中的第一个div元素"/>
<input type="button" id="btn2" value="body中的最后一个div元素"/>
<input type="button" id="btn3" value="选择body中的奇数的div"/>
<input type="button" id="btn4" value="选择body中的偶数的div"/>
<hr/>
<div id="one">
<div class="mini">
111
</div>
</div>
<div id="two">
<div class="mini">
222
</div>
<div class="mini">
333
</div>
</div>
<div id="three">
<div class="mini">
444
</div>
<div class="mini">
555
</div>
<div class="mini">
666
</div>
</div>
<span id="four">
</span>
</body>
</html>
