add
English [?d] US [?d]
vt.Add; ?? ?? ??... ?? ??(???? ?? ??)
English [klɑ :s] US [kl?s] n.class; ??vt....? ?? ???? ??(?? ??, ???); class
adj. ?? ??, ???, ???vi.... ????(?? ??)? ??, ?? ????(?? ?? ??)? ???
jquery addClass() ??? ???
??: addClass() ???? ??? ??? ?? ??? ???? ?????. ? ??? ?? ??? ??? ???? ?? ?? ??? ??? ??? ?????. ?? ???? ???? ?? ?? ??? ??? ???? ?????.
??: ??$(selector).addClass(???)
????:
| Parameters | Description |
| class | ?????. ?? ??? ??? ??? ?????. |
??: ??$(selector).addClass(function(index,oldclass))
????:
| Parameters | Description |
| ??(???,oldclass) | ?????. ??? ?? ??? ??? ??? ???? ??? ?????. |
| index | ????. ???? ??? ?????. |
| ?? | ????. ???? ?? ??? ?????. |
jquery addClass() ??? ?
<html>
<head>
<script type="text/javascript" src="http://apps.bdimg.com/libs/jquery/2.1.1/jquery.min.js"></script>
<script type="text/javascript">
$(document).ready(function(){
$("button").click(function(){
$("p:first").addClass("intro");
});
});
</script>
<style type="text/css">
.intro
{
font-size:120%;
color:red;
}
</style>
</head>
<body>
<h1>This is a heading</h1>
<p>This is a paragraph.</p>
<p>This is another paragraph.</p>
<button>向第一個(gè) p 元素添加一個(gè)類</button>
</body>
</html>??? ????? ??? "???? ??" ??? ?????