感觉没错，为什么动不了
<!DOCTYPE html>
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<title>jQuery动画特效</title>
<script src="http://libs.baidu.com/jquery/1.9.0/jquery.js" type="text/javascript"></script>
<style type="text/css">
div{
position:absolute;
width:100px;
height:100px;
top:100px;
left:30px;
background-color:blue;
}
</style>
</head>
<body>
<h3>jQuery动画特效</h3>
<input id="btnleft" type="button" value="左移" />
<input id="btnright" type="button" value="右移" />
<div></div>
<script type="text/javascript">
$(function(){
$("#btnleft").bind("click",function(){
$("div").animate({
left:"-=50px"
},3000,function(){
alert("左移成功")；
});
});
$("#btnright").bind("click",function(){
$("div").animate({
left:"+=50px"
},3000,function(){
alert("右移成功");
});
});
});
</script>
</body>
</html>
