关闭边栏菜单，当点击移动版本的身体

Question

我有这个代码完美的桌面版本。它在打开后在外部点击时关闭sidenav div（在体内）。

我应该如何使它在移动版本中工作？它似乎无法识别JavaScript。有人可以帮忙吗？

function openNav() { 
 
    document.getElementById("mySidenav").style.width = "250px"; 
 
} 
 

 
function closeNav() { 
 
    document.getElementById("mySidenav").style.width = "0"; 
 
} 
 

 
$('body').on('click', function(){ 
 
    if(parseInt($('#mySidenav').css('width')) > 0){ 
 
    closeNav(); 
 
    } 
 
});

.sidenav { 
 
    height: 100%; 
 
    width: 0; 
 
    position: fixed; 
 
    z-index: 1; 
 
    top: 0; 
 
    right: 0; 
 
    background-color: #111; 
 
    overflow-x: hidden; 
 
    transition: 0.5s; 
 
    padding-top: 60px; 
 
} 
 

 
.sidenav a { 
 
    padding: 8px 8px 8px 32px; 
 
    text-decoration: none; 
 
    font-size: 25px; 
 
    color: #818181; 
 
    display: block; 
 
    transition: 0.3s; 
 
} 
 

 
.sidenav a:hover, .offcanvas a:focus{ 
 
    color: #f1f1f1; 
 
} 
 

 
.sidenav .closebtn { 
 
    position: absolute; 
 
    top: 0; 
 
    right: 25px; 
 
    font-size: 36px; 
 
    margin-left: 50px; 
 
} 
 

 
@media screen and (max-height: 450px) { 
 
    .sidenav {padding-top: 15px;} 
 
    .sidenav a {font-size: 18px;} 
 
}

<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script> 
 
<div id="mySidenav" class="sidenav"> 
 
    <a href="javascript:void(0)" class="closebtn" onclick="closeNav()">&times;</a> 
 
    <a href="#">About</a> 
 
    <a href="#">Services</a> 
 
    <a href="#">Clients</a> 
 
    <a href="#">Contact</a> 
 
</div> 
 

 
<h2>Animated Sidenav Example</h2> 
 
<p>Click on the element below to open the side navigation menu.</p> 
 
<span style="font-size:30px;cursor:pointer" onclick="openNav()">&#9776; open</span> 
 
<p>Click on the body area here to close the menu after opening it. However, 
 
it doesn't work on mobile version. </p>

Answer 1

简单地增加touchstart得到它的移动:)

$('body').on('click touchstart', function(){ 
    if(parseInt($('#mySidenav').css('width')) > 0){ 
    closeNav(); 
    } 
}); 

Answer 2

请试试这个，让我知道它是否适合你

function openNav() { 
    console.log("open"); 
    document.getElementById("mySidenav").style.width = "250px"; 
} 

function closeNav() { 
    document.getElementById("mySidenav").style.width = "0"; 
} 


document.addEventListener("click", function(){ 
    if(parseInt($('#mySidenav').css('width')) > 0){ 
    document.getElementById("mySidenav").style.width = "0"; 
    } 
});