1 <!DOCTYPE html>
2 <html>
3
4 <head>
5 <meta charset="utf-8" />
6 <title></title>
7 <script src="js/jquery.js" type="text/javascript"></script>
8 </head>
9
10 <body>
11 <p class="demo">jQuery Demo</p>
12 <script type="text/javascript">
13 $(".demo").click(function(){ // 给class为demo 的元素添加行为
14 alert("JQuery demo!"); // 点击出现弹窗
15 });
16 </script>
17 </body>
18
19 </html>