<!DOCTYPE html> <html> <head> <title>页面中常见返回顶部效果(TOP)</title> <meta charset="UTF-8"> <link rel="shortcut icon" href="static/images/logo.png" type="image/x-icon" /> <!-- <link rel="stylesheet" href="static/css/style.css" type="text/css"> --> <link rel="stylesheet" type="text/css" href="static/font-awesome/css/font-awesome.min.css"> <script src="static/js/jquery.js"></script> <style type="text/css"> *{margin: 0px;padding: 0px;} body{text-align: center;} div{width: 1200px;height: 1500px;background: #eee;margin: 30px auto;} a{text-decoration: none;color: #fff;} p#back{text-align: center;position: fixed;bottom: 100px;right: 60px;background: #ccc;border-radius: 3px;height: 50px;width: 80px;display: none;} </style> <script> $(function() { $(window).scroll(function(){ if($(window).scrollTop()>150){ $('#back').fadeIn(1000) }else{ $('#back').fadeOut(1000) } }) }) </script> </head> <body> <a href=""></a> <div>网页内容</div> <p id="back"><a href=""><span class="fa fa-arrow-circle-up"></span><br> 返回顶部</a></p> </body> </html>
```javascript
$(function() {
$(window).scroll(function(){
if($(window).scrollTop()>150){
$('#back').fadeIn(1000)
}else{
$('#back').fadeOut(1000)
}
})
})
```