Clickvarbtn=document.getElementById('btn');vardiv=document.getElementById('div');functionclickHandeler(e){alert('hello');}functionsubClickHandeler(e){e=e||window.event;if(e.stopPropagation)e.stopPropagation();elsee.cancelBubble=true;}btn.addEventListener('click',clickHandeler,false);div.addEventListener('click',subClickHandeler,false);IE中點擊div的時候還是會彈出hello，為什么？該怎么解決？