我目前正在使用w3school的这个简单的切换菜单。
我想知道如何对其进行编辑以便在其外部或链接（徽标，新闻，联系方式，关于）上单击时关闭
<!DOCTYPE html>
<html>
<head>
<meta name="viewport" content="width=device-width, initial-scale=1">
<link rel="stylesheet" href="https://cdnjs.cloudflare.com/ajax/libs/font-awesome/4.7.0/css/font-awesome.min.css">
<style>
body {
font-family: Arial, Helvetica, sans-serif;
}
.mobile-container {
max-width: 480px;
margin: auto;
background-color: #555;
height: 500px;
color: white;
border-radius: 10px;
}
.topnav {
overflow: hidden;
background-color: #333;
position: relative;
}
.topnav #myLinks {
display: none;
}
.topnav a {
color: white;
padding: 14px 16px;
text-decoration: none;
font-size: 17px;
display: block;
}
.topnav a.icon {
background: black;
display: block;
position: absolute;
right: 0;
top: 0;
}
.topnav a:hover {
background-color: #ddd;
color: black;
}
.active {
background-color: #4CAF50;
color: white;
}
</style>
</head>
<body>
<!-- Simulate a smartphone / tablet -->
<div class="mobile-container">
<!-- Top Navigation Menu -->
<div class="topnav">
<a href="#home" class="active">Logo</a>
<div id="myLinks">
<a href="#news">News</a>
<a href="#contact">Contact</a>
<a href="#about">About</a>
</div>
<a href="javascript:void(0);" class="icon" onclick="myFunction()">
<i class="fa fa-bars"></i>
</a>
</div>
<div style="padding-left:16px">
<h3>Vertical Mobile Navbar</h3>
<p>This example demonstrates how a navigation menu on a mobile/smart phone could look like.</p>
<p>Click on the hamburger menu (three bars) in the top right corner, to toggle the menu.</p>
</div>
<!-- End smartphone / tablet look -->
</div>
<script>
function myFunction() {
var x = document.getElementById("myLinks");
if (x.style.display === "block") {
x.style.display = "none";
} else {
x.style.display = "block";
}
}
</script>
</body>
</html>
最简单的方法是在整个文档中添加一个事件监听器，并使用条件查看您要单击的位置。这是具有这种逻辑的Codepen：https://codepen.io/alac1984/pen/RwNVKOe
HTML：
<!DOCTYPE html>
<html>
<head>
<meta name="viewport" content="width=device-width, initial-scale=1">
<link rel="stylesheet" href="https://cdnjs.cloudflare.com/ajax/libs/font-awesome/4.7.0/css/font-awesome.min.css">
</head>
<body>
<!-- Simulate a smartphone / tablet -->
<div class="mobile-container">
<!-- Top Navigation Menu -->
<div class="topnav">
<a href="#home" class="active">Logo</a>
<div id="myLinks">
<a href="#news">News</a>
<a href="#contact">Contact</a>
<a href="#about">About</a>
</div>
<a href="#" class="icon" id="myButton">
<i id="itag" class="fa fa-bars"></i>
</a>
</div>
<div style="padding-left:16px">
<h3>Vertical Mobile Navbar</h3>
<p>This example demonstrates how a navigation menu on a mobile/smart phone could look like.</p>
<p>Click on the hamburger menu (three bars) in the top right corner, to toggle the menu.</p>
</div>
<!-- End smartphone / tablet look -->
</div>
CSS：
body {
font-family: Arial, Helvetica, sans-serif;
}
.mobile-container {
max-width: 480px;
margin: auto;
background-color: #555;
height: 500px;
color: white;
border-radius: 10px;
}
.topnav {
overflow: hidden;
background-color: #333;
position: relative;
}
.topnav #myLinks {
display: none;
}
.topnav a {
color: white;
padding: 14px 16px;
text-decoration: none;
font-size: 17px;
display: block;
}
.topnav a.icon {
background: black;
display: block;
position: absolute;
right: 0;
top: 0;
}
.topnav a:hover {
background-color: #ddd;
color: black;
}
.active {
background-color: #4CAF50;
color: white;
}
JS：
const button = document.getElementById('myButton');
const div = document.getElementById('myLinks');
const icon = document.querySelector('.icon');
console.log(icon);
document.addEventListener('click', myFunction)
function myFunction(e) {
e.preventDefault();
console.log(e.target);
if((div.style.display === '' || div.style.display === 'none') && (e.target === button || e.target === itag)) {
div.style.display = 'block';
} else if((div.style.display === '' || div.style.display === 'none') && (e.target !== button || e.target !== itag)) {
div.style.display = 'none';
} else {
div.style.display = 'none';
}
}