Function onError

src/leaflet/mapping/ImageMapLayer.js:287–294

()

            this.fire('load', { bounds: bounds });
        };
        var onError = function() {
            this._map && this._map.removeLayer(this._currentImage);
          /**
           * @event ImageMapLayer#error
           * @description 请求图层加载失败后触发。
           */
          this.fire('error');
        }
        this._currentImage.off('load');
        this._currentImage.once('load', onLoad, this);
        this._currentImage.off('error');