用javascript怎么获取目标的属性值？

[Cain]

xml里有这么一段
...

<image key="hh" id="A">
<name>K.O</name>
</image>

...

用js如何获取image的key和id的值？

[clare2003]

<script>
function f1()
{


nodeBook = oMetaData.selectSingleNode("//image");
sIdValue = nodeBook.getAttribute("id")
skyevalue=nodeBook.getAttribute("key")
alert("id="+sIdValue+" key="+skyevalue);
}
</script>

<XML ID="oMetaData">
<?xml version="1.0" encoding="UTF-8"?>
<image key="hh" id="A">
<name>K.O</name>
</image>
</XML>
<button type="input" id="input" value="input1" onclick="f1()">aaa</button>

[hbhbhbhbhb1021]

先得到image对象obj，然后用obj.getAttribute("key")