源代码 ：
点击运行
<!DOCTYPE html> <html> <head> <meta charset="utf-8"> <title>开源教程(ossoft.cn)</title> <script> function addBorder(){ document.getElementById("compman").border="2"; } </script> </head> <body> <img id="compman" src="compman.gif" alt="Computerman" width="107" height="98"> <br><br> <input type="button" onclick="addBorder()" value="加上边框"> </body> </html>
运行结果