$(selector).each(function(index,element))。function中要放两个值,
<script>
$(document).ready(function(){
$("button").click(function(){
$("li").each(function(){ //执行一个遍历事件;
alert($(this).text()) //打印当前的内容
});
});
});
</script>
</head>
<body>
<button>输出每个列表项的值</button>
<ul>
<li>Coffee</li>
<li>Milk</li>
<li>Soda</li>
</ul>