大神帮忙看看哪里有问题!
<body>
<div>
<input id="zuoyi" type=button value="左移"><br>
<br>
<input id="youyi" type=button value="右移">
</div>
<script>
$(function(){
$("#zuoyi").click(function(){
$("div").animate({left:"-=50px"},300);
});
$("#youyi").click(function(){
$("div").animate({left:"+=50px"},300);
});
});
</script>
</body>
