<!DOCTYPE html>
<html>
<head>
<meta http-equiv="Content-type" content="text/html; charset=utf-8" />
<title></title>
<style>
.left div,
.right div {
100%;
height: 50px;
padding: 5px;
margin: 5px;
float: left;
border: 1px solid #ccc;
display: none;
}
.left div {
background: #bbffaa;
}
.right div {
background: yellow;
}
</style>
<script src="https://lib.sinaapp.com/js/jquery/1.9.1/jquery-
1.9.1.min.js"></script>
</head>
<body>
<h2>slideDown</h2>
<div class="left">
<h4>测试一</h4>
<div class="a" id="a1">hide-show</div>
<button>点击slideDown显示动画</button>
</div>
<script type="text/javascript">
//点击button
//执行3秒隐藏
//执行3秒显示
$("button:first").click(function() {
$("#a1").slideDown(3000)
});
</script>
<div class="right">
<h4>测试二</h4>
<div class="b" id="a2">hide-show</div>
<button>点击slideDown执行回调</button>
</div>
<script type="text/javascript">
//点击button
//执行3秒隐藏
//执行3秒显示
$("button:last").click(function() {
$("#a2").slideDown(3000,function(){
$("#a1").slideDown(3000,function(){
$(".a,.b").slideUp(3000,function(){alert('动画结束')})})
})
});
</script>
</body>
</html>