点击运行
<html> <head> <script type="text/javascript"> function changeLink() { document.getElementById('venus').href="http://www.qianmu.net" } </script> </head> <body> <p>请点击金星（Venus）：</p> <img src="/zy/i/eg_planets.jpg" usemap="#planetmap" /> <map name="planetmap"> <area id="venus" shape="circle" coords="180,139,14" href ="/zy/example/html/venus.html" alt="Venus" /> </map> <input type="button" onclick="changeLink()" value="改变链接" /> </body> </html>
运行结果
