Make a nav bar stick

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别跟我提以往
别跟我提以往 2020-11-29 19:44

Make a nav bar stick Make a nav bar stick Make a nav bar stick Make a nav bar stick Make a nav bar stick Make a nav bar stick Make a nav bar stick Make a nav bar stick Make

11条回答
  •  离开以前
    2020-11-29 19:57

    $(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;
    }
    
    
    
      
    

    and more stuff to continue scrolling here

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