<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN">
<HTML>
<HEAD>
<TITLE> New Document </TITLE>
<META NAME="Generator" CONTENT="EditPlus">
<META NAME="Author" CONTENT="">
<META NAME="Keywords" CONTENT="">
<META NAME="Description" CONTENT="">
</HEAD>
<script>
function cc(val){
alert(val);
}
</script>
<BODY>
<input type="text" name="user.name" value="">
<input type="button" name="ss" value="tiijao" onclick="cc(this.value);"></BODY>
</HTML>好吧，我邪恶一点...
var un = document.getElementsByName("user.name")
for(var i=0;i<un.length;i++)
{
alert(un[i].value=="")
}
这样就行了