Make a nav bar stick to the top when scrolling wit

问题:

I am trying to make my nav bar move with the page but stick to the top if the user scrolls down. Could anyone provide any examples or how to? Much appreciated. (I'm hopeless in any other language). I tried using the css sticky but it didn't work.

<div class="headercss">
    <div class="headerlogo"></div>
    <div class="nav">
        <ul>
            <li><a href="#home"> <br>BLINK</a></li>
            <li><a href="#news"><br>ADVERTISING WITH BLINK</a></li>
            <li><a href="#contact"><br>EDUCATING WITH BLINK</a></li>
            <li><a href="#about"><br>ABOUT US</a></li>
        </ul>
    </div>
</div>

 

/* www..com
Blinx Service
Created by Pierre Chedraoui
(c) Copyright 2015
*/

/* BODY */

body {
    margin: 0px;
    background-color: #000000;
    height: 2000px;
}


/* 1. HEADER */

.headercss {
    width: auto;
    height: 320px;
    background-color: #000000;
    position: relative;
}

.headerlogo {
    width: auto;
    height: 250px;
    background-color: #272727;
    position: relative;
}

.nav {
    width: auto;
    height: 70px;
    background-color: #272727;
    position: relative;
    overflow: hidden;
}

ul {
    list-style-type: none;
    margin: 0;
    padding: 0;
    float:left;
    width:100%;
    overflow: hidden;
}


li {
    float: left;
    width:25%;
    min-width: 243px;
    overflow: hidden;
}

a:link, a:visited {
    display: block;
    height: 68px;
    min-width: 243px;
    font-size: 12px;
    color: #FFFFFF;
    border-right: 1px solid #000000;
    border-top: 1px solid #000000;
    background-color: #272727;
    text-align: center;
    text-decoration: none;
    font-family: 'Raleway', Arial;
    letter-spacing: 2pt;
    line-height: 200%;
    overflow: hidden;
}

a:hover, a:active {
    background-color: #242424;
}

回答1:

$(document).ready(function() {
  
  $(window).scroll(function () {
      //if you hard code, then use console
      //.log to determine when you want the 
      //nav bar to stick.  
      console.log($(window).scrollTop())
    if ($(window).scrollTop() > 280) {
      $('#nav_bar').addClass('navbar-fixed');
    }
    if ($(window).scrollTop() < 281) {
      $('#nav_bar').removeClass('navbar-fixed');
    }
  });
});

html, body {
	height: 4000px;
}

.navbar-fixed {
    top: 0;
    z-index: 100;
  position: fixed;
    width: 100%;
}

#body_div {
	top: 0;
	position: relative;
    height: 200px;
    background-color: green;
}

#banner {
	width: 100%;
	height: 273px;
    background-color: gray;
	overflow: hidden;
}

#nav_bar {
	border: 0;
	background-color: #202020;
	border-radius: 0px;
	margin-bottom: 0;
    height: 30px;
}

.nav_links {
    margin: 0;
}

.nav_links li {
	display: inline-block;
    margin-top: 4px;
}
.nav_links li a {
	padding: 0 15.5px;
	color: #3498db;
	text-decoration: none;
}

<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>
<div id="banner">
     <h2>put what you want here</h2>
     <p>just adjust javascript size to match this window</p>
  </div>

  <nav id='nav_bar'>
    <ul class='nav_links'>
      <li><a href="url">Nav Bar</a></li>
      <li><a href="url">Sign In</a></li>
      <li><a href="url">Blog</a></li>
      <li><a href="url">About</a></li>
    </ul>
  </nav>
<div id='body_div'>
    <p style='margin: 0; padding-top: 50px;'>and more stuff to continue scrolling here</p>
</div>

回答2:

add to your .nav css block the

position: fixed

and it will work

回答3:

I hope this can help someone. Determine the nav offset through js and then apply sticky position css to nav:

But first, we will define the styles in the stylesheet, like so.

.sticky {
    position: fixed;
    width: 100%;
    left: 0;
    top: 0;
    z-index: 100;
    border-top: 0;
}

Then, we will apply that class to the navigation conditionally with jQuery.

$(document).ready(function() {
  var stickyNavTop = $('.nav').offset().top;

  var stickyNav = function(){
    var scrollTop = $(window).scrollTop();

    if (scrollTop > stickyNavTop) { 
      $('.nav').addClass('sticky');
    } else {
      $('.nav').removeClass('sticky'); 
    }
  };

  stickyNav();

  $(window).scroll(function() {
    stickyNav();
  });
});

回答4:

CSS:

.headercss {
    width: 100%;
    height: 320px;
    background-color: #000000;
    position: fixed;
}

Attribute position: fixed will keep it stuck, while other content will be scrollable. Don't forget to set width:100% to make it fill fully to the right.

Example

回答5:

Give headercss position fixed.

.headercss {
    width: 100%;
    height: 320px;
    background-color: #000000;
    position: fixed;
    top:0
}

Then give the content container a 320px padding-top, so it doesn't get behind the header.

回答6:

Just use z-index CSS property as described in the highest liked answer and the nav bar will stick to the top.

Example:

<div class="navigation">
 <nav>
   <ul>
    <li>Home</li>
    <li>Contact</li>
   </ul>
 </nav>

.navigation {
   /* fixed keyword is fine too */
   position: sticky;
   top: 0;
   z-index: 100;
   /* z-index works pretty much like a layer:
   the higher the z-index value, the greater
   it will allow the navigation tag to stay on top
   of other tags */
}

回答7:

You can do it with CSS only by creating your menu twice. It's not ideal but it gives you the opportunity have a different design for the menu once it's on top and you'll have nothing else than CSS, no jquery. Here is an example with DIV (you can of course change it to NAV if you prefer):

<div id="hiddenmenu">
 THIS IS MY HIDDEN MENU
</div>
<div id="header">
 Here is my header with a lot of text and my main menu
</div>
<div id="body">
 MY BODY
</div>

And then have the following CSS:

#hiddenmenu {
position: fixed;
top: 0;
z-index:1;
 }
#header {
top: 0;
position:absolute;
z-index:2;
 }
#body {
padding-top: 80px;
position:absolute;
z-index: auto;
 }

Here is a fiddle for you to see: https://jsfiddle.net/brghtk4z/1/

回答8:

/* Add css in your style */


.sticky-header {
    position: fixed;
    width: 100%;
    left: 0;
    top: 0;
    z-index: 100;
    border-top: 0;
    transition: 0.3s;
}


/* and use this javascript code: */

$(document).ready(function() {

  $(window).scroll(function () {
    if ($(window).scrollTop() > ) {
      $('.headercss').addClass('sticky-header');
    } else{
      $('.headercss').removeClass('sticky-header');
    }
  });
});

回答9:

I would recommend to use Bootstrap. http://getbootstrap.com/. This approach is very straight-forward and light weight.

<div class="navbar navbar-inverse navbar-fixed-top">
   <div class="container">
      <div class="navbar-collapse collapse">
         <ul class="nav navbar-nav navbar-fixed-top">
            <li><a href="#home"> <br>BLINK</a></li>
                <li><a href="#news"><br>ADVERTISING WITH BLINK</a></li>
                <li><a href="#contact"><br>EDUCATING WITH BLINK</a></li>
                <li><a href="#about"><br>ABOUT US</a></li>
            </ul>
        </div>
    </div>
</div>

You need to include the Bootstrap into your project, which will include the necessary scripts and styles. Then just call the class 'navbar-fixed-top'. This will do the trick. See above example

回答10:

Just Call this code and call it to your nave bar for sticky navbar

  .sticky {
        /*css for  stickey navbar*/
        position: sticky;
        top: 0; 
        z-index: 100;
    }

回答11:

To make header sticky, first you have to give position: fixed; for header in css. Then you can adjust width and height etc. I would highly recommand to follow this article. How to create a sticky website header

Here is code as well to work around on header to make it sticky.

header { 
   position: fixed; 
   right: 0; 
   left: 0; 
   z-index: 999;
}

This code above will go inside your styles.css file.