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[英]hide menu on scroll down then show the menu when the scroll up reach 0 [javascript] not working for me
[英]Hide menu when scroll down and show when scroll up by using vanilla JavaScript
我有一個導航菜單。 這個菜單,我已經用bootstrap構建了,我希望它在向下滾動時隱藏並在向上滾動時顯示。 我僅通過使用普通JavaScript即可滿足要求。
這是我的HTML代碼:
<nav class="navbar navbar-default navbar-fixed-top custom-header" >
<div class="container-fluid">
<!-- Brand and toggle get grouped for better mobile display -->
<div class="navbar-header">
<button type="button" class="navbar-toggle collapsed" data-toggle="collapse" data-target="#bs-example-navbar-collapse-1">
<span class="sr-only">Menu</span>
<span class="icon-bar"></span>
<span class="icon-bar"></span>
<span class="icon-bar"></span>
</button>
<a class="navbar-brand" href="" style="color:#FFF">
<img src="img/header-logo.png" alt="Happy Tour" />
</a>
</div>
<!-- This section contains all link buttons in the header -->
<div class="collapse navbar-collapse pull-right mybtn" id="bs-example-navbar-collapse-1" style="margin-top:9px;">
<button class="btn btn-primary btn-md"><i class="glyphicon glyphicon-bookmark"></i> Destinations</button>
<button class="btn btn-success btn-md"><i class="glyphicon glyphicon-th"></i> Tour Package</button>
<button class="btn btn-danger btn-md"><i class="glyphicon glyphicon-file"></i> Book Ticket</button>
<button class="btn btn-info btn-md"><i class="glyphicon glyphicon-search"></i> Find Hotel</button>
<button class="btn btn-success btn-md"><i class="glyphicon glyphicon-user"></i> Register</button>
<button class="btn btn-primary btn-md"><i class="glyphicon glyphicon-fire"></i> Login</button>
</div>
</div>
</nav>
這是一個CSS:
.custom-header{
padding: 0;
height: 120px;
line-height: 120px;
background: url(../img/top_head_bg.jpg) repeat-x;
border:none;
}
就像本文建議的那樣,“ 自動隱藏粘性標題” (我也用這4個單詞在Google中立即找到了解決方案),您可以將標題設置為固定
.header {
width: 100%;
height: 7.5em;
position: fixed;
z-index: 1000;
top: 0;
left: 0;
}
然后對滾動做出反應,以使用JS更改top
屬性。
祝好運'
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