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问当Overlay处于活动状态时，网页滚动应可见
EN

Stack Overflow用户

提问于 2017-04-06 05:42:34

回答 2查看 39关注 0票数 0

目标：

当您打开覆盖时，网页的滚动(而不是覆盖的滚动)应该是可见的，但不能使用。

问题：

当您看不见滚动时，页面移动到右侧，而当您看到滚动时，页面相对于覆盖移动到右侧，这让人很恼火。

有办法做到这一点吗？

谢谢!

function openNav() {
    document.getElementById("myNav").style.height = "100%";
    
     $('body').addClass('noscroll');   
}

function closeNav() {
    document.getElementById("myNav").style.height = "0%";
    
     $('body').removeClass('noscroll');
    
}

body {
    margin: 0;
    font-family: 'Lato', sans-serif;
}

.overlay {
    height: 0%;
    width: 100%;
    position: fixed;
    z-index: 1;
    top: 0;
    left: 0;
    background-color: rgb(0,0,0);
    background-color: rgba(0,0,0, 0.8);
    overflow-y: hidden;
    transition: 0.5s;
}

.overlay-content {
   position: relative;
   top: 10%;
   width: 70%;
   text-align: left;
   margin: 30px auto;
   background: white;
    overflow-y: auto;
    height: 100%;  
    
}

.overlay a {
    padding: 8px;
    text-decoration: none;
    font-size: 36px;
    color: #818181;
    display: block;
    transition: 0.3s;
}

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

.overlay .closebtn {
    position: absolute;
    top: 20px;
    right: 45px;
    font-size: 60px;
}


.noscroll { 
  overflow: hidden;
}

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

<h2>Fullscreen Overlay Nav Example</h2>
<p>Click on the element below to open the fullscreen overlay navigation menu.</p>
<p>In this example, the navigation menu will slide downwards from the top:</p>
  
<br/>  
<br/>  
<br/>  
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<span style="font-size:30px;cursor:pointer" onclick="openNav()">&#9776; open</span>  

<br/>    
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javascript

html

css

overlay

回答 2

Stack Overflow用户

发布于 2017-04-06 05:50:24

只需在no scroll类中添加"position: fixed；overflow-y:scroll“即可。

如果您不想让它位于顶部，请根据正文的当前滚动获取当前X位置，并将Y偏移量设置为该位置

function openNav() {
    document.getElementById("myNav").style.height = "100%";
    $(document).scrollTop()
     $('body').addClass('noscroll');   

}

function closeNav() {
    document.getElementById("myNav").style.height = "0%";
    
     $('body').removeClass('noscroll');
$('body').scroll(function() { alert("scroll") });
    
}

body {
    margin: 0;
    font-family: 'Lato', sans-serif;
    overflow-y: scroll;

}

.overlay {
    height: 0%;
    width: 100%;
    position: fixed;
    z-index: 1;
    top: 0;
    left: 0;
    background-color: rgb(0,0,0);
    background-color: rgba(0,0,0, 0.8);
    overflow-y: hidden;
    transition: 0.5s;
}

.overlay-content {
   position: relative;
   top: 10%;
   width: 70%;
   text-align: left;
   margin: 30px auto;
   background: white;
    overflow-y: auto;
    height: 100%;  
    
}

.overlay a {
    padding: 8px;
    text-decoration: none;
    font-size: 36px;
    color: #818181;
    display: block;
    transition: 0.3s;
}

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

.overlay .closebtn {
    position: absolute;
    top: 20px;
    right: 45px;
    font-size: 60px;
}


.noscroll { 
  position: fixed; overflow-y:scroll;
}

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

<h2>Fullscreen Overlay Nav Example</h2>
<p>Click on the element below to open the fullscreen overlay navigation menu.</p>
<p>In this example, the navigation menu will slide downwards from the top:</p>
  
<br/>  
<br/>  
<br/>  
<br/>  
<br/>  
<br/>  
<br/>    
<br/>  
<br/>  
<br/>  
<br/>  
<br/>  
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<br/>  
<br/>  
<br/>    
   
<span style="font-size:30px;cursor:pointer" onclick="openNav()">&#9776; open</span>  

<br/>    
<br/>  
<br/>  
<br/>  
<br/>  
<br/>  
<br/>    
  <br/>  
<br/>  
<br/>  
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票数 0

Stack Overflow用户

发布于 2017-04-06 06:05:57

尝试此操作(单击时滚动将转到顶部，但将被禁用)：

function noscroll() {
  window.scrollTo( 0, 0);
}

function openNav() {
   document.getElementById("myNav").style.height = "100%";
   window.addEventListener('scroll', noscroll);  
}

function closeNav() {
   document.getElementById("myNav").style.height = "0%";
  window.removeEventListener('scroll', noscroll)
}

票数 0

页面原文内容由Stack Overflow提供。腾讯云小微IT领域专用引擎提供翻译支持

原文链接：

https://stackoverflow.com/questions/43242138

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