tryjsref_area_hostname 在线代码实例

 <img src="/upload2/statics/images/course/planets.gif" width="145" height="126" usemap="#planetmap">

<map name="planetmap">
<area id="venus" shape="circle" coords="124,58,8" alt="Venus" href="venus.htm">
</map>

<p>Venus 区域的主机名称:
<script>
document.write(document.getElementById('venus').hostname);
</script>
</p>