<svg class="sketch" @mousemove="moveComponent" @mouseup="removeComponent"@mousedown="chooseComponent" @mouseover="displayTool"上述函數中都要觸發某段相同代碼A，所以才想是否能將此段代碼A綁定到所有Mouse事件。暫時這樣用，請教更好的方案/現成的APIaddEventListener(['mousemove', 'mouseup', 'mousedown'], this.$el, this.triggerWatch);export function addEventListener(events, el, func)  {     events.forEach(function(event) {         el.addEventListener(event, func, false);     }); }