用jQuery实现：
<!DOCTYPE html>
<html>
<head lang="en">
<meta charset="UTF-8">
<title></title>
<style>
.menu_level1{
width:500px;
height:auto;
margin:50px auto;
}
.menu_level1>li{
position: relative;
float: left;
list-style-type: none;
height:30px;
}
.menu_level1>li>a{
padding:10px 15px;
font-size:16px;
}
.menu_level2{
position:absolute;
top:30px;
left:0;
padding:20px;
height:100px;
background-color:#fff;
border:1px solid #ccc;
border-radius:5px;
box-shadow: 2px 2px 2px #eee;
display: none;
}
.menu_level1>li:hover{
background-color:pink;
cursor: pointer;
}
</style>
</head>
<body>
<ul class="menu_level1">
<li><a>哈哈</a></li>
<li><a>嘿嘿</a></li>
<li><a>呼呼</a></li>
<li><a>点我</a>
<div class="menu_level2">哈罗，我是一块板砖，哪里需要哪里搬。。。。。</div>
</li>
</ul>
</body>
<script src="jquery-3.2.1.min.js"></script>
<script>
$(".menu_level1 li").click(function(){
if($(this).hasClass("curr")){
$(this).removeClass("curr");
$(".menu_level2").hide();
}else{
$(".menu_level2").show();
$(this).addClass("curr");
}
});
$(document).click(function(e){
var target = $(e.target);
if(target.closest(".menu_level1").length != 0) return;
$(".menu_level2").hide();
});
</script>
</html>
然而，用angular实现，轻松的几句代码即可完成
<!DOCTYPE html>
<html ng-app="app">
<head lang="en">
<meta charset="UTF-8">
<title></title>
<style>
.menu_level1{
width:500px;
height:auto;
margin:50px auto;
}
.menu_level1>li{
position: relative;
float: left;
list-style-type: none;
height:30px;
}
.menu_level1>li>a{
padding:10px 15px;
font-size:16px;
}
.menu_level2{
position:absolute;
top:30px;
left:0;
padding:20px;
height:100px;
background-color:#fff;
border:1px solid #ccc;
border-radius:5px;
box-shadow: 2px 2px 2px #eee;
}
.menu_level1>li:hover{
background-color:pink;
cursor: pointer;
}
</style>
</head>
<body ng-controller="myCtrl">
<ul class="menu_level1">
<li><a>哈哈</a></li>
<li><a>嘿嘿</a></li>
<li><a>呼呼</a></li>
<li ng-click="show()"><a>点我</a>
<div class="menu_level2" ng-show="showDiv">哈罗，我是一块板砖，哪里需要哪里搬。。。。。</div>
</li>
</ul>
</body>
<script src="angular.js"></script>
<script>
var app = angular.module("app",[]);
app.controller("myCtrl",function($scope){
$scope.showDiv = false;
$scope.show = function(){
$scope.showDiv = !$scope.showDiv;
};
});
</script>
</html>
时间： 2024-10-15 22:30:39