mouseup后，EventListener会阻止点击事件

Question

function initDrag(event)
    {
        var lastOffset  = context.getElementTranslation(element);

        // Get initial coordinates for (x,y)
        initialX        = event.pageX;
        initialY        = event.pageY;

        // Determine last offset points for (x,y)
        lastOffsetX     = lastOffset ? lastOffset[0] : 0;
        lastOffsetY     = lastOffset ? lastOffset[1] : 0;
        startOffsetX    = initialX - lastOffsetX;
        startOffsetY    = initialY - lastOffsetY;

        event.stopPropagation();
        event.preventDefault();

        elem.className = elem.className + ' draggable';

        document.documentElement.addEventListener('mousemove', doDrag, false);
        document.documentElement.addEventListener('mouseup', stopDrag, false);
    }

 jQuery('.classname').on('click', function(event)
 {

  alert(23);
  jQuery('.medium-editor-button-first').attr('style','');

        if(!event.shiftKey)
        {
            if(layer.hasClass('layer_selected'))
            {
                event.stopPropagation();
                return false;
            }
            context.deselectAllLayers();
            context.setLayerSelected(layerId);
        }
        else
        {
            /*if(jQuery('.layer_selected').length < 1 )
            {
                context.deselectAllLayers();
            }*/
            if(layer.hasClass('layer_selected'))
            {
                layer.removeClass('layer_selected multiSelectLayers');
                context.initializeMultiSelect(layer);
                event.stopPropagation();
                return false;
            }

            context.selectors.multiSelect.removeClass('layer_selected');
        }

        layer.find('.tp-caption').focus();

        layer.addClass("layer_selected");
        context.initializeMultiSelect(layerId);

        event.stopPropagation();
    });

每次鼠标单击后点击功能开火。我想阻止此点击事件。我尝试了 event.stopPropagation（）; 和 event.preventDefault（）; 但是没有用。

提前致谢。