[JavaScript]plupload多图片上传图片

var uploader = new plupload.Uploader({ //创建实例的构造方法 
    runtimes: 'html5,flash,silverlight,html4', 
    //上传插件初始化选用那种方式的优先级顺序 
    browse_button: 'btn', 
    // 上传按钮 
    url: "ajax.php", 
    //远程上传地址 
    flash_swf_url: 'plupload/Moxie.swf', 
    //flash文件地址 
    silverlight_xap_url: 'plupload/Moxie.xap', 
    //silverlight文件地址 
    filters: { 
        max_file_size: '500kb', 
        //最大上传文件大小（格式100b, 10kb, 10mb, 1gb） 
        mime_types: [ //允许文件上传类型 
        { 
            title: "files", 
            extensions: "jpg,png,gif" 
        }] 
    }, 
    multi_selection: true, 
    //true:ctrl多文件上传, false 单文件上传 
    init: { 
        FilesAdded: function(up, files) { //文件上传前 
            if ($("#ul_pics").children("li").length > 30) { 
                alert("您上传的图片太多了！"); 
                uploader.destroy(); 
            } else { 
                var li = ''; 
                plupload.each(files, 
                function(file) { //遍历文件 
                    li += "<li id='" + file['id'] + "'><div class='progress'><span class='bar'></span><span class='percent'>0%</span></div></li>"; 
                }); 
                $("#ul_pics").append(li); 
                uploader.start(); 
            } 
        }, 
        UploadProgress: function(up, file) { //上传中，显示进度条 
            $("#" + file.id).find('.bar').css({ 
                "width": file.percent + "%" 
            }).find(".percent").text(file.percent + "%"); 
        }, 
        FileUploaded: function(up, file, info) { //文件上传成功的时候触发 
            var data = JSON.parse(info.response); 
            $("#" + file.id).html("<div class='img'><img src='" + data.pic + "'/></div><p>" + data.name + "</p>"); 
        }, 
        Error: function(up, err) { //上传出错的时候触发 
            alert(err.message); 
        } 
    } 
}); 
uploader.init();