jquery动画为什么延迟执行？
<!DOCTYPE html>
<html>
<head>
<title>Display Page</title>
<link href="style.css" rel="stylesheet" type="text/css" />
<script type="text/javascript" src="jquery-1.9.1.js"></script>
</head>
<body>
<div id="transform" style="width: 300px;height:60px;background: blue;">
<input type="text" style="width: 240px;left: 30px;top:20px;position: relative;">
</div>
<script type="text/javascript">
$("input[type='text']").focus(function () {
var elem = $('#transform');
elem.animate({
width:"500px",
height:"200px"
}, 1000);
$(this).animate({
width:"420",
left:"40"
}, 1000).blur(function () {
elem.animate({
width:"300px",
height:"60px"
}, 1000);
$(this).animate({
width:'240px',
left:'30px'
}, 1000);
});
});
</script>
</body>
</html>
