text: export class DragAndDropUploadbox {
    constructor() {
      this.save = 'http://js.syncfusion.com/demos/ejServices/api/uploadbox/Save';
      this.remove = 'http://js.syncfusion.com/demos/ejServices/api/uploadbox/Remove';
      this.dragAndDrop = true;
      this.multipleFiles = true;
    }
  }
  document.addEventListener('dragover', function(event) {
    event.preventDefault();
    event.dataTransfer.dropEffect = 'none';
    return false;
  }, false);
  document.addEventListener('drop', function(event) {
    event.dataTransfer.dropEffect = 'none';
    event.preventDefault();
    return false;
  }, false);
  