为什么没有动画效果呢
<!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>
</head>
<style>
div{
width:50px;
height:50px;
background:#ddd;
margin:30px 0;
position:relative;
}
</style>
<body>
<input type="button" value="左移" id="left"/><br>
<div></div>
<input type="button" value="右移" id="right"/>
<span></span>
</body>
<script>
$(function(){
$("#right").bind("click",function(){
$("div").animate({
left:"+=50px"
},3000);
});
$("#left").bind("click",function(){
$("div").animate({
right:"+=100px"
},3000,function(){
width:"+=100px",
height:"+=100px"
});
});
}) ;
</script>
</html>
