导入jquery报错

来源：2-8 自由编程

慕桂英8538108

2019-04-12 14:43:32

这个bug找了很久还是不知道哪里出错麻烦老师帮忙看下

<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8">

<title>职员列表</title>
<style>
div {
float: left;
border: 1px gray solid;
width: 200px;
text-align: center;
}
</style>
</head>
<body>
<div id="s1">员工列表</div>
<div class="s2">职位列表</div>
<div class="s3">部门列表</div>
<script type = "text/javascript" src = "js/jquery-3.3.1.js"></script>
<script type="text/javascript">
  document.getElementById("s1").onclick = function(){
   $(this).css("border-color","blue");
   $(this).css("font-size","50px");
   alert("diaomouren");
  };

  alert("diaomouren");
</script>