ajaxuplaod下载地址：
http://pan.baidu.com/share/link?shareid=297437689&uk=739224795
文章例子压缩包：
http://pan.baidu.com/share/link?shareid=299848842&uk=739224795
示例代码：
<html>
<head>
<title>ajaxupload上传</title>
<Meta charset="utf-8"/>
<style type="text/css">
.divMain{
position:absolute;
width:140px;
height:100px;
padding-left:60px;
padding-top:40px;
}
#upload{
width:150px;
height:30px;
}
.content{
width:300px;
height:200px;
}
</style>
<script type="text/javascript" src="./jquery.1.8.js"></script>
<script type="text/javascript" src="./ajaxupload.js"></script>
</head>
<body>
<div class="divMain">
<button id="upload">文件上传</button>
<div class="content"></div>
</div>
</body>
<script type="text/javascript">
/*
ajaxupload上传
*/
$(document).ready(function(){
var button = $('#upload'),interval;
var fileType = "all",fileNum = "one";
new AjaxUpload(button,{
action: './upload.PHP',name: 'userfile',onSubmit : function(file,ext){
if(fileType == "pic")
{
if (ext && /^(jpg|png|jpeg|gif)$/.test(ext)){
this.setData({
'info': '文件类型为图片'
});
} else {
$('<li></li>').appendTo('.files').text('非图片类型文件，请重传');
return false;
}
}
button.text('文件上传中');
if(fileNum == 'one')
this.disable();
interval = window.setInterval(function(){
var text = button.text();
if (text.length < 14){
button.text(text + '.');
} else {
button.text('文件上传中');
}
},200);
},onComplete: function(file,response){//上传成功的函数；response代表服务器返回的数据
//清楚按钮的状态
button.text('文件上传');
window.clearInterval(interval);
this.enable();
//修改下方div的显示文字
if('success'==response){
$(".content").text("上传成功");
}else{
$(".content").text("上传失败");
}
}
});
});
</script>
</html>