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jQuery实现的监听导航滚动置顶状态功能示例

网络编程 2021-07-04 16:46www.168986.cn编程入门
这篇文章主要介绍了jQuery实现的监听导航滚动置顶状态功能,涉及基于jQuery的事件响应及状态监听等相关操作技巧,需要的朋友可以参考下

本文实例讲述了jQuery实现的监听导航滚动置顶状态功能。分享给大家供大家参考，具体如下

1. js代码

/
  Created by EDUASK on 2016/5/20.
 /
$(function(){
  //引入id标签;
  var navtive=$("#native");
  //设置导航标签为置顶;
  var offsetTop=navtive.offset().;
  //定义一个监听高度;
  var scrollHeight=$(document).scrollTop;
  fn(navtive,offsetTop);
  //设置监听事件;
  $(window).scroll(function(){
    fn(navtive,offsetTop);
  });
  //调用方法;
  function fn(navtive,offsetTop){
    var scrollHeight=$(document).scrollTop();
    if(offsetTop>scrollHeight){
      navtive.css("",offsetTop);
    }else{
      navtive.css("",scrollHeight);
    }
  }
});

2. html代码

<!DOCTYPE html>
<html lang="en">
<head>
  <meta charset="UTF-8">
  <title>监听导航滚动置顶</title>
  <!--css样式;-->
  <style type="text/css">
    /添加导航条的样式;
    /
    #native{
      background: blue;
      width: 100%;
      height: 20px;
      color: red;
      position: absolute;
      : 100px;
      left: 0;
      text-align: center;
    }
  </style>
  <script src="http://libs.baidu./jquery/2.0.0/jquery.min.js"></script>
  <script type="text/javascript" src="监听导航滚动置顶.js">
  </script>
</head>
<body>
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<div id="native">欢迎访问我的导航条</div>
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</body>
</html>

感兴趣的朋友可以使用在线HTML/CSS/JavaScript代码运行工具测试运行效果。

更多关于jQuery相关内容感兴趣的读者可查看本站专题《》、《》、《》、《》、《》及《》

希望本文所述对大家jQuery程序设计有所帮助。

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