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javascript在滚动上固定的位置

[英]javascript for position fixed on scroll

我有这个div只是一个标题。

<div class="container-fluid DFOCpadding">
<div class="row">
    <div class="col-lg-12">
        <div class=" text-center ">
        <span class="toptext">DANCE FOR OVARIAN CANCER</span>
        </div>
    </div>
</div>

还有一个导航栏,我想把它定位为固定的

<nav class="navbar navbar-default">
<div class="container"> 
    <div class="navbar-header page-scroll">
        <button type="button" class="navbar-toggle glyphicon glyphicon-chevron-down" data-toggle="collapse" data-target="#navbar">
            <span class="sr-only">Dance Dance</span>
        </button>
    </div>
    <div class="collapse navbar-collapse" id="navbar">
        <ul class="nav navbar-nav">
            <li><a href="http://danceforovariancancer.com.au">HOME</a></li>             
            <li><a class="scroll" href="#register"><span class="register">REGISTER</span></a></li>
            <li><a class="scroll" href="#faq">FAQ's</a></li>    
            <li><a class="scroll" href="#acts">ACTS</a></li>    
            <li><a class="scroll" href="#about">ABOUT</a></li>  
            <li><a class="scroll" href="#contact">CONTACT</a></li>      
        </ul>
    </div>
</div>
</nav>  

当你滚动浏览它时,我需要页面才能抓住导航栏,就像在这个网站上一样: https//ovariancancer.net.au/

我已经看到了这方面的答案,但它们非常局限于OP的用例,所以我无法让它为我的页面工作。

干杯

她的代码类似于' https://ovariancancer.net.au/ '

希望这可以帮助

 $(window).scroll(function() { if ($(window).scrollTop() > 100) { $(".navbar").css({ 'position': 'fixed', 'top': '0px', 'width': '100%', 'background': '#cfcfcf', 'z-index': '99' }); } else { $(".navbar").css({ 'position': 'relative', 'background': '#FFFFFF', 'width': '100%' }) } }); 
 <link href="//maxcdn.bootstrapcdn.com/bootstrap/3.3.2/css/bootstrap.min.css" rel="stylesheet" /> <script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script> <div class="container-fluid DFOCpadding"> <div class="row"> <div class="col-lg-12"> <div class=" text-center "> <span class="toptext">DANCE FOR OVARIAN CANCER</span> </div> </div> </div> <nav class="navbar navbar-default"> <div class="container"> <div class="navbar-header page-scroll"> <button type="button" class="navbar-toggle glyphicon glyphicon-chevron-down" data-toggle="collapse" data-target="#navbar"> <span class="sr-only">Dance Dance</span> </button> </div> <div class="collapse navbar-collapse" id="navbar"> <ul class="nav navbar-nav"> <li><a href="http://danceforovariancancer.com.au">HOME</a> </li> <li><a class="scroll" href="#register"><span class="register">REGISTER</span></a> </li> <li><a class="scroll" href="#faq">FAQ's</a> </li> <li><a class="scroll" href="#acts">ACTS</a> </li> <li><a class="scroll" href="#about">ABOUT</a> </li> <li><a class="scroll" href="#contact">CONTACT</a> </li> </ul> </div> </div> </nav> <P>&nbsp;</p> <P>&nbsp;</p> <P>&nbsp;</p> <P>&nbsp;</p> <P>&nbsp;</p> <P>&nbsp;</p> <P>&nbsp;</p> <P>&nbsp;</p> <P>&nbsp;</p> <P>&nbsp;</p> <P>&nbsp;</p> <P>&nbsp;</p> <P>&nbsp;</p> <P>&nbsp;</p> <P>&nbsp;</p> <P>&nbsp;</p> <P>&nbsp;</p> <P>&nbsp;</p> <P>&nbsp;</p> <P>&nbsp;</p> <P>&nbsp;</p> <P>&nbsp;</p> <P>&nbsp;</p> <P>&nbsp;</p> <P>&nbsp;</p> <P>&nbsp;</p> <P>&nbsp;</p> <P>&nbsp;</p> <P>&nbsp;</p> <P>&nbsp;</p> <P>&nbsp;</p> <P>&nbsp;</p> <P>&nbsp;</p> <P>&nbsp;</p> <P>&nbsp;</p> <P>&nbsp;</p> <P>&nbsp;</p> <P>&nbsp;</p> <P>&nbsp;</p> <P>&nbsp;</p> <P>&nbsp;</p> <P>&nbsp;</p> <P>&nbsp;</p> <P>&nbsp;</p> <P>&nbsp;</p> <P>&nbsp;</p> <P>&nbsp;</p> <P>&nbsp;</p> <P>&nbsp;</p> <P>&nbsp;</p> <P>&nbsp;</p> <P>&nbsp;</p> <P>&nbsp;</p> <P>&nbsp;</p> <P>&nbsp;</p> <P>&nbsp;</p> <P>&nbsp;</p> <P>&nbsp;</p> <P>&nbsp;</p> <P>&nbsp;</p> <P>&nbsp;</p> <P>&nbsp;</p> <P>&nbsp;</p> <P>&nbsp;</p> <P>&nbsp;</p> <P>&nbsp;</p> <P>&nbsp;</p> <P>&nbsp;</p> <P>&nbsp;</p> <P>&nbsp;</p> <P>&nbsp;</p> <P>&nbsp;</p> <P>&nbsp;</p> <P>&nbsp;</p> <P>&nbsp;</p> <P>&nbsp;</p> <P>&nbsp;</p> <P>&nbsp;</p> <P>&nbsp;</p> <P>&nbsp;</p> <P>&nbsp;</p> <P>&nbsp;</p> <P>&nbsp;</p> <P>&nbsp;</p> <P>&nbsp;</p> <P>&nbsp;</p> <P>&nbsp;</p> <P>&nbsp;</p> <P>&nbsp;</p> <P>&nbsp;</p> <P>&nbsp;</p> <P>&nbsp;</p> <P>&nbsp;</p> <P>&nbsp;</p> <P>&nbsp;</p> <P>&nbsp;</p> <P>&nbsp;</p> <P>&nbsp;</p> <P>&nbsp;</p> <P>&nbsp;</p> <P>&nbsp;</p> <P>&nbsp;</p> <P>&nbsp;</p> <P>&nbsp;</p> <P>&nbsp;</p> <P>&nbsp;</p> <P>&nbsp;</p> <P>&nbsp;</p> <P>&nbsp;</p> <P>&nbsp;</p> <P>&nbsp;</p> <P>&nbsp;</p> <P>&nbsp;</p> <P>&nbsp;</p> <P>&nbsp;</p> <P>&nbsp;</p> <P>&nbsp;</p> <P>&nbsp;</p> <P>&nbsp;</p> <P>&nbsp;</p> <P>&nbsp;</p> <P>&nbsp;</p> <P>&nbsp;</p> <P>&nbsp;</p> <P>&nbsp;</p> <P>&nbsp;</p> <P>&nbsp;</p> <P>&nbsp;</p> <P>&nbsp;</p> <P>&nbsp;</p> <P>&nbsp;</p> <P>&nbsp;</p> <P>&nbsp;</p> <P>&nbsp;</p> <P>&nbsp;</p> <P>&nbsp;</p> <P>&nbsp;</p> <P>&nbsp;</p> <P>&nbsp;</p> <P>&nbsp;</p> <P>&nbsp;</p> <P>&nbsp;</p> <P>&nbsp;</p> <P>&nbsp;</p> <P>&nbsp;</p> <P>&nbsp;</p> <P>&nbsp;</p> <P>&nbsp;</p> <P>&nbsp;</p> <P>&nbsp;</p> <P>&nbsp;</p> <P>&nbsp;</p> <P>&nbsp;</p> <P>&nbsp;</p> <P>&nbsp;</p> <P>&nbsp;</p> <P>&nbsp;</p> <P>&nbsp;</p> <P>&nbsp;</p> <P>&nbsp;</p> <P>&nbsp;</p> <P>&nbsp;</p> <P>&nbsp;</p> <P>&nbsp;</p> <P>&nbsp;</p> <P>&nbsp;</p> <P>&nbsp;</p> <P>&nbsp;</p> <P>&nbsp;</p> <P>&nbsp;</p> <P>&nbsp;</p> <P>&nbsp;</p> <P>&nbsp;</p> <P>&nbsp;</p> <P>&nbsp;</p> <P>&nbsp;</p> <P>&nbsp;</p> <P>&nbsp;</p> <P>&nbsp;</p> <P>&nbsp;</p> <P>&nbsp;</p> <P>&nbsp;</p> <P>&nbsp;</p> <P>&nbsp;</p> <P>&nbsp;</p> <P>&nbsp;</p> <P>&nbsp;</p> <P>&nbsp;</p> <P>&nbsp;</p> <P>&nbsp;</p> <P>&nbsp;</p> <P>&nbsp;</p> <P>&nbsp;</p> <P>&nbsp;</p> <P>&nbsp;</p> <P>&nbsp;</p> <P>&nbsp;</p> <P>&nbsp;</p> <P>&nbsp;</p> <P>&nbsp;</p> <P>&nbsp;</p> <P>&nbsp;</p> <P>&nbsp;</p> <P>&nbsp;</p> <P>&nbsp;</p> <P>&nbsp;</p> <P>&nbsp;</p> <P>&nbsp;</p> <P>&nbsp;</p> <P>&nbsp;</p> <P>&nbsp;</p> <P>&nbsp;</p> <P>&nbsp;</p> <P>&nbsp;</p> <P>&nbsp;</p> <P>&nbsp;</p> <P>&nbsp;</p> <P>&nbsp;</p> <P>&nbsp;</p> <P>&nbsp;</p> <P>&nbsp;</p> <P>&nbsp;</p> <P>&nbsp;</p> <P>&nbsp;</p> <P>&nbsp;</p> <P>&nbsp;</p> <P>&nbsp;</p> <P>&nbsp;</p> <P>&nbsp;</p> <P>&nbsp;</p> <P>&nbsp;</p> <P>&nbsp;</p> <P>&nbsp;</p> <P>&nbsp;</p> <P>&nbsp;</p> <P>&nbsp;</p> <P>&nbsp;</p> <P>&nbsp;</p> <P>&nbsp;</p> <P>&nbsp;</p> <P>&nbsp;</p> <P>&nbsp;</p> <P>&nbsp;</p> <P>&nbsp;</p> <P>&nbsp;</p> <P>&nbsp;</p> <P>&nbsp;</p> <P>&nbsp;</p> <P>&nbsp;</p> <P>&nbsp;</p> <P>&nbsp;</p> <P>&nbsp;</p> <P>&nbsp;</p> <P>&nbsp;</p> <P>&nbsp;</p> 

试试这个:

.navbarfixed {
    position: fixed;
 }



$(function() {
var nav = $(".navbar");
$(window).scroll(function() {    
    var scroll = $(window).scrollTop();

    if (scroll >= 500) {
        nav.addClass("navbarfixed");
    } else {
        nav.removeClass("navbarfixed");
    }
});
});

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