BootWiki教程网
源代码：
点击运行
<!DOCTYPE html> <html> <head> <meta charset="utf-8"> <title>BootWiki 教程网</title> <script src="//cdn.staticfile.net/jquery/1.10.2/jquery.min.js"></script> <script> $(document).ready(function(){ $("button").click(function(){ alert("图片宽度: " + $("img").attr("width")); }); }); </script> </head> <body> <img alt="Pulpit Rock" height="213" src="img_pulpitrock.jpg" width="284"> <br> <button>返回图片的宽度</button> </body> </html>
运行结果