可以直接传啊
<BODY>
<input type=text name="txt">
</BODY>
</HTML>
<SCRIPT LANGUAGE="JavaScript">
<!--
function ff(f)
{
f.value = "hello"
}ff(document.all.txt)
//-->
</SCRIPT>
<BODY>
<input type=text name="txt">
</BODY>
</HTML>
<SCRIPT LANGUAGE="JavaScript">
<!--
function ff(f)
{
f.value = "hello"
}ff(document.all.txt)
//-->
</SCRIPT>
即可取到,你用formName作参数传个名也可:
document.forms[formName]