在线运行代码 - 菜鸟教程

<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<title>菜鸟教程(cainiaoplay.com)</title>
</head>
<body>

<img src ="planets.gif.html" width="145" height="126" alt="Planets" usemap ="#planetmap">
<map name="planetmap">
<area id="sun" shape="rect" coords="0,0,82,126" href="sun.htm" alt="Sun">
<area id="mercury" shape="circle" coords="90,58,3" href="mercur.htm" alt="Mercury">
<area id="venus" shape="circle" coords="124,58,8" href="venus.htm" alt="Venus">
</map>
<p><a id="javascript" href="https://www.cainiaoplay.com/js/">JavaScript 教程</a></p>
<p>第一个链接/地址的ID：
<script>
document.write(document.links[0].id);
</script></p>

</body>
</html>
源代码

动行结果
