51help TIY
码：
<html> <body> <img id="planets" src="../i/eg_planets.jpg" tppabs="http://www.51help.tk/i/eg_planets.jpg" usemap="#planetmap" /> <map name="planetmap"> <area id="venus" shape="circle" coords="180,139,14" href ="../example/html/venus.html" tppabs="http://www.51help.tk/example/html/venus.html" target ="_blank" alt="Venus" /> </map> <br /> area 元素的 id 是： <script type="text/javascript"> document.write(document.links[0].id) </script> </body> </html>
查看结果: