<title>高手教程(study.p2hp.com)</title>
<img src="planets.gif" width="145" height="126" alt="Planets" usemap="#planetmap">
<map id="planetmap" name="planetmap">
<area shape="rect" coords="0,0,82,126" alt="Sun" href="sun.htm">
<area shape="circle" coords="90,58,3" alt="Mercury" href="mercur.htm">
<area shape="circle" coords="124,58,8" alt="Venus" href="venus.htm">
<button onclick="myFunction()">点我</button>
document.getElementById("planetmap").name = "newMapName"; document.getElementById("demo").innerHTML = "name 属性的值从 'planetmap' 改为 'newMapName'.";
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