Question

求助大神js 点击显示下拉菜单，点击空白处隐藏

Answer 1

可以参考这个！

document.onclick = function(){
//隐藏层代码
};

div.onclick = function(oEvent){
//取消冒泡
oEvent = oEvent || window.event;
if(document.all){
oEvent.cancelBubble = true;
}else{
oEvent.stopPropagation();
}
};