点击页面其他地方隐藏元素

<script>
document.addEventListener("click",clickHidden);//所有组件添加点击事件
//var mn=document.getElementById("personcenter");//获取菜单节点，菜单id为menu
function clickHidden(eve) {
    if( eve.target.id != "personcenter" ) {//点击的如果不是菜单，菜单隐藏。如果是菜单，菜单显现
    	document.getElementById("personinfos").style.display = "none";
    	document.getElementById("nologin").style.display = "none";
    }
}

function personcenter() {
	var username = getCookie("userName");
	if (username != null && username != "") {
		$("#personinfos").css("display","block");
	} else {
		$("#nologin").css("display","block");
	}
}
</script>