PHP+Ajax+plupload无刷新上传头像代码

1 <script type="text/javascript" src="jquery.js"></script>
2 <script type="text/javascript" src="plupload/plupload.full.min.js"></script>

 1 var uploader_avatar = new plupload.Uploader({//创建实例的构造方法 
 2     runtimes: ‘gears,html5,html4,silverlight,flash‘, //上传插件初始化选用那种方式的优先级顺序 
 3     browse_button: [‘avatar_uplpad_btn‘], // 上传按钮 
 4     url: "ajax.php", //远程上传地址 
 5     flash_swf_url: ‘js/plugins/plupload/Moxie.swf‘, //flash文件地址 
 6     silverlight_xap_url: ‘js/plugins/plupload/Moxie.xap‘, //silverlight文件地址 
 7     filters: { 
 8         max_file_size: ‘10mb‘, //最大上传文件大小（格式100b, 10kb, 10mb, 1gb） 
 9         mime_types: [//允许文件上传类型 
10             {title: "files", extensions: "jpg,png,gif,jpeg"} 
11         ] 
12     }, 
13     multi_selection: false, //true:ctrl多文件上传, false 单文件上传 
14     init: { 
15         FilesAdded: function(up, files) { //文件上传前 
16  
17             uploader_avatar.start(); 
18         }, 
19         UploadProgress: function(up, file) { //上传中，显示进度条 
20             var percent = file.percent; 
21             $("#" + file.id).find(‘.bar‘).css({"width": percent + "%"}); 
22             $("#" + file.id).find(".percent").text(percent + "%"); 
23         }, 
24         FileUploaded: function(up, file, info) { //文件上传成功的时候触发 
25             var data = eval("(" + info.response + ")");//解析返回的json数据 
26             $("#avatar_pic").html("<img  src=‘" + data.pic + "‘/>") 
27         }, 
28         Error: function(up, err) { //上传出错的时候触发 
29             alert(err.message); 
30         } 
31     } 
32 }); 
33 uploader_avatar.init();