HTML DOM tabIndex 属性

HTML DOM Area 对象

定义和用法

tabIndex 属性可设置或返回某个区域的 tab 键控制次序。

语法

areaObject.tabIndex=tabIndex

实例

下面的例子可展示图像映射中区域的 tab 键控制次序：

<html>
<head>
<script type="text/javascript">
function showTabIndex()
{
var sun=document.getElementById('sun').tabIndex;
var mercury=document.getElementById('mercury').tabIndex;
var venus=document.getElementById('venus').tabIndex;

document.write("Tab index of Sun: " + sun);
document.write("<br />");
document.write("Tab index of Mercury: " + mercury);
document.write("<br />");
document.write("Tab index of Venus: " + venus);
}
</script>
</head>
<body>

<img src ="planets.gif"
width="145" height="126"
alt="Planets"
usemap ="#planetmap" />

<map name="planetmap">
<area shape ="rect" coords ="0,0,82,126"
href ="sun.htm" id="sun" tabIndex="1" />
<area shape ="circle" coords ="90,58,3"
href ="mercur.htm" id="mercury" tabIndex="2" />
<area shape ="circle" coords ="124,58,8"
href ="venus.htm" id="venus" tabIndex="3" />
</map>

<input type="button" onclick="showTabIndex()"
value="Show tabIndex" />

</body>
</html>

TIY

返回图像映射中区域的 tab 键控制次序

HTML DOM Area 对象