用途
<map> 标签定义客户端的图像映射。图像映射是带有可点击区域的图像。
例子
<img src="planets.jpg" border="0" usemap="#planetmap" alt="Planets" />
<map name="planetmap" id="planetmap">
<area shape="circle" coords="180,139,14" href ="venus.html" alt="Venus" />
<area shape="circle" coords="129,161,10" href ="mercur.html" alt="Mercury" />
<area shape="rect" coords="0,0,110,260" href ="sun.html" alt="Sun" />
</map>
<map> 标签在HTML5与HTML4.01之间存在如下差异