H5+WebSocket は複数のファイルを同時にアップロードします

function FileInfo(file, pagesize) {
    this.Size = file.size;
    this.File = file;
    this.FileType = file.type;
    this.FileName = file.name;
    this.PageSize = pagesize;
    this.PageIndex = 0;
    this.Pages = 0;
    this.UploadError = null;
    this.UploadProcess = null;
    this.DataBuffer = null;
    this.UploadBytes = 0;
    this.ID = Math.floor(Math.random() * 0x10000).toString(16);
    this.LoadCallBack = null;
    if (Math.floor(this.Size % this.PageSize) > 0) {
        this.Pages = Math.floor((this.Size / this.PageSize)) + 1;
 
    }
    else {
        this.Pages = Math.floor(this.Size / this.PageSize);
 
    }
 
}
FileInfo.prototype.Reset = function () {
    this.PageIndex = 0;
    this.UploadBytes = 0;
}
FileInfo.prototype.toBase64String = function () {
    var binary = ''
    var bytes = new Uint8Array(this.DataBuffer)
    var len = bytes.byteLength;
 
    for (var i = 0; i < len; i++) {
        binary += String.fromCharCode(bytes[i])
    }
    return window.btoa(binary);
}
FileInfo.prototype.OnLoadData = function (evt) {
    var obj = evt.target["tag"];
 
    if (evt.target.readyState == FileReader.DONE) {
        obj.DataBuffer = evt.target.result;
        if (obj.LoadCallBack != null)
            obj.LoadCallBack(obj);
 
    }
    else {
        if (obj.UploadError != null)
            obj.UploadError(fi, evt.target.error);
    }
 
}
 
FileInfo.prototype.Load = function (completed) {
    this.LoadCallBack = completed;
    if (this.filereader == null || this.filereader == undefined)
        this.filereader = new FileReader();
    var reader = this.filereader;
    reader["tag"] = this;
    reader.onloadend = this.OnLoadData;
    var count = this.Size - this.PageIndex * this.PageSize;
    if (count > this.PageSize)
        count = this.PageSize;
    this.UploadBytes += count;
    var blob = this.File.slice(this.PageIndex * this.PageSize, this.PageIndex * this.PageSize + count);
 
    reader.readAsArrayBuffer(blob);
};
 
FileInfo.prototype.OnUploadData = function (file) {
    var channel = file._channel;
    var url = file._url;
    channel.Send({ url: url, parameters: { FileID: file.ID, PageIndex: file.PageIndex, Pages: file.Pages, Base64Data: file.toBase64String()} }, function (result) {
        if (result.status == null || result.status == undefined) {
            file.PageIndex++;
            if (file.UploadProcess != null)
                file.UploadProcess(file);
            if (file.PageIndex < file.Pages) {
                file.Load(file.OnUploadData);
            }
        }
        else {
 
            if (file.UploadError != null)
                file.UploadError(file, data.status);
        }
    });
}
 
FileInfo.prototype.Upload = function (channel, url) {
    var fi = this;
    channel.Send({ url: url, parameters: { FileName: fi.FileName, Size: fi.Size, FileID: fi.ID} }, function (result) {
        if (result.status == null || result.status == undefined) {
            fi._channel = channel;
            fi._url = result.data;
            fi.Load(fi.OnUploadData);
        }
        else {
            if (file.UploadError != null)
                file.UploadError(fi, result.status);
        }
    });
 
}

function onDragEnter(e) {
            e.stopPropagation();
            e.preventDefault();
        }
 
        function onDragOver(e) {
            e.stopPropagation();
            e.preventDefault();
            $(dropbox).addClass('rounded');
        }
 
        function onDragLeave(e) {
            e.stopPropagation();
            e.preventDefault();
            $(dropbox).removeClass('rounded');
        }
 
        function onDrop(e) {
            e.stopPropagation();
            e.preventDefault();
            $(dropbox).removeClass('rounded');
            var readFileSize = 0;
            var files = e.dataTransfer.files;
            if (files.length > 0) {
                onFileOpen(files);
            }
 
        }