abstract：<!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
<!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 type="text/javascript" src="static/js/jquery.js"></script>
<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>
Correcting teacher：查无此人Correction time：2019-04-17 14:00:59
Teacher's summary：写了不少作业嘛。jq的每行语句结束，要增加;号。继续加油。