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The alt property sets or returns an alternate text to be displayed, if a browser cannot show an area.
alt属性可设置或返回替换用的文字,针对那些无法显示area的浏览器
areaObject.alt=alternate_text |
The following example returns the alternate text for the "Venus" area in the image-map:
举例将返回热点图中针对"Venus"area的替换文字:
<html> <body> <img src="/images/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="/text/venus.htm" /> </map> <p>Alternate text for "Venus" is: <script type="text/javascript"> x=document.getElementById('venus'); document.write(x.alt); </script> </p> </body> </html> |
Return the alternate text for an area in an image-map
返回热点地图中某区域的替换文字