sideDragBar.on('mousedown.sideMenu', function(e){this.setCapture && this.setCapture();// ie下可以使用setCapture來解決object拖拽問題startDragging(e);});function removeDocumentListeners(e){this.releaseCapture && this.releaseCapture(); // ie下可以使用setCapture來解決object拖拽問題doc.off('mousemove.sideMenu');doc.off('selectstart.sideMenu');doc.off('mouseup.sideMenu');}