有关documentElement的问题
对于xml文件:
tree.xml
------------------------------------------------------------
<?xml version="1.0" encoding="GB2312"?>
<tree>
<tree text="456" />
<tree text="企划部" src="tree.asp?id=d000000021" />
<tree text="开发管理部" src="tree.asp?id=d000000019" />
<tree text="产品部" src="tree.asp?id=d000000022" />
<tree text="项目部" src="tree.asp?id=d000000023" />
</tree>
------------------------------------------------------------
我alert(xmlDoc.documentElement)的时候是一个对象
而对于tree.asp
------------------------------
<?xml version="1.0" encoding="GB2312"?>
<tree>
<tree text="456" />
<tree text="企划部" src="tree.asp?id=d000000021" />
<tree text="开发管理部" src="tree.asp?id=d000000019" />
<tree text="产品部" src="tree.asp?id=d000000022" />
<tree text="项目部" src="tree.asp?id=d000000023" />
</tree>
------------------------------
提示为null,这是为什么?