身體點擊，關閉菜單，如果打開

Question

這是我的JavaScript代碼爲導航菜單幻燈片形式右側。它工作正常，但我想關閉此菜單時，一旦打開點擊或關閉菜單上點擊任何地方身體和切換按鈕？

Answer 1

請按照這個教程它有所有導航菜單滑入和滑出。 http://www.w3schools.com/howto/howto_js_sidenav.asp

Answer 2

w3schools上有很多例子，你可以使用它們中的任何一個。但是，我個人喜歡的是：

function openNav() { 
 
    document.getElementById("mySidenav").style.width = "250px"; 
 
    document.getElementById("main").style.marginLeft = "250px"; 
 
    document.body.style.backgroundColor = "rgba(0,0,0,0.4)"; 
 
} 
 

 
function closeNav() { 
 
    document.getElementById("mySidenav").style.width = "0"; 
 
    document.getElementById("main").style.marginLeft= "0"; 
 
    document.body.style.backgroundColor = "white"; 
 
}

body { 
 
    font-family: "Lato", sans-serif; 
 
    transition: background-color .5s; 
 
} 
 

 
.sidenav { 
 
    height: 100%; 
 
    width: 0; 
 
    position: fixed; 
 
    z-index: 1; 
 
    top: 0; 
 
    left: 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; 
 
} 
 

 
#main { 
 
    transition: margin-left .5s; 
 
    padding: 16px; 
 
} 
 

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

<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> 
 

 
<div id="main"> 
 
    <h2>Sidenav Push Example</h2> 
 
    <p>Click on the element below to open the side navigation menu, and push this content to the right. Notice that we add a black see-through background-color to body when the sidenav is opened.</p> 
 
    <span style="font-size:30px;cursor:pointer" onclick="openNav()">&#9776; open</span> 
 
</div>