经常会遇到，菜单弹窗需要点击其他地方弹窗消失，下面是js实现代码

<div class="collapse navbar-collapse" id="bs-example-navbar-collapse-1">							<ul class="nav navbar-nav">
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$(function() {
	$(document).bind("click", function(e) {
		var target = $(e.target);
		if (target.closest(".navbar-toggle,.caret").length == 0 ) {
			/*.closest()沿 DOM 树向上遍历，直到找到已应用选择器的一个匹配为止，返回包含零个或一个元素的 jQuery 对象。*/
			$(".navbar-collapse").css('height','0');
			$(".navbar-collapse").removeClass('in')
		};
		e.stopPropagation();
	})
})