如何通过html5使用Drag事件编辑器拖拽上传图片？

/**
 * Created by zhaojunlike on 8/22/2017.
 */
define(function (require, exports, module) {

  /**
   * 截图粘贴
   * @param selector
   * @param callback
   */
  exports.paste = function (selector, callback) {
    document.querySelector(selector).addEventListener("paste", function (ev) {
      var data = ev.clipboardData;
      var items = (event.clipboardData || event.originalEvent.clipboardData).items;
      for (var i in items) {
        var item = items[i];
        //如果是图片
        if (item.kind === 'file' && item.type.indexOf('image') > -1) {
          var blob = item.getAsFile();
          var reader = new FileReader();
          //reader读取完成后，xhr上传
          reader.onload = function (event) {
            var base64 = event.target.result;
            //ajax上传图片
            //返回一个base64数据
            var img = {type: item.type, kind: item.kind};
            if (typeof callback === "function") {
              callback(event.target.result, img, event);
            }

          }; // data url!
          reader.readAsDataURL(blob);//reader
        }
      }
    });
  };

  /**
   * 拖拽上传
   * @param selector
   * @param callback
   */
  exports.drag = function (selector, callback) {
    var element = document.querySelector(selector);
    element.addEventListener("drop", function (e) {
      e.preventDefault();
      var files = e.dataTransfer.files;
      for (var i = 0; i < files.length; i++) {
        //回调文件
        //alert("Drop " + file[i].name.toString());
        var reader = new FileReader();
        var item = files[i];
        reader.onload = function (event) {
          var base64 = event.target.result;
          //返回一个base64数据
          var img = {type: item.type, name: item.name};
          if (typeof callback === "function") {
            callback(event.target.result, img, event);
          }
        };
        reader.readAsDataURL(files[i]);//reader
      }
      return false;
    });

    element.addEventListener("dragenter", function (e) {
      e.stopPropagation();
      e.preventDefault();
    });

    element.addEventListener("dragover", function (e) {
      e.dataTransfer.dropEffect = "copy";
      e.stopPropagation();
      e.preventDefault();
    });

    document.body.addEventListener("dragover", function (e) {
      e.stopPropagation();
      e.preventDefault();
      return false;
    });
  }

  /**
   * 解析粘贴过来的内容，看是否有不是本站的图片,解析出来上传到本站
   */
  exports.parseImg = function () {

  }
});

      //粘贴上传图片
      Edtools.paste("#post_content", function (base64, image, event) {
        $.post("{:url('api/uploader/upEditorImg')}",{base:base64}, function (ret) {
          layer.msg(ret.msg);
          if (ret.code === 1) {
            //新一行的图片显示
            editor.insertValue("\n![" + ret.data.title + "](" + ret.data.path + ")");
          }
        });
      });

      //拖拽上传图片
      Edtools.drag("#post_content", function (base64, image, event) {
        $.post("{:url('api/uploader/upEditorImg')}",{base:base64}, function (ret) {
          layer.msg(ret.msg);
          if (ret.code === 1) {
            //新一行的图片显示
            editor.insertValue("\n![" + ret.data.title + "](" + ret.data.path + ")");
          }
        });
      });