返回客户端图片映射的usemap属性 - 在线编辑器

          <img id="planets" src="/examples/planets.gif" width="145" height="126" usemap="#planetmap">
<map name="planetmap">
<area id="venus" shape="circle" coords="124,58,8" alt="The planet Venus" href="venus.htm">
</map>
<p>usemap属性的值:
  <script>
    document.write(document.getElementById("planets").useMap);
  </script>
</p>
        