coords 属性可设置或返回图像映射中某个可点击区域的坐标。
areaObject.coords=coordinates
下面的例子可返回图像映射中某个可点击区域的坐标:
<html>
<body>
<img src="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 coordinates:
<script type="text/javascript">
x=document.getElementById("venus");
document.write(x.coords
);
</script>
</p>
</body>
</html>