App下載
實例代碼( Tip: 登錄后體驗更佳 )
<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<title>W3Cschool</title>
<script src="//libs.baidu.com/jquery/1.10.2/jquery.min.js">
</script>
<script>
$(document).ready(function(){
$("button").click(function(){
$("p").removeClass("intro");
});
});
</script>
<style type="text/css">
.intro{
font-size:120%;
color:red;
}
</style>
</head>
<body>
<h1></h1>
<p class="intro"></p>
<p class="intro"></p>
<button>P"intro"</button>
</body>
</html>
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運行結(jié)果