问题一：
=============
<form>
<input name=txtText1 type="text">
<input name=fileFile1 type=file>
<input type="button" value="测试" onclick="txtText1.value=fileFile1.value">
</form>
=============
<form>
<input name=txtText1 type="text">
<input name=fileFile1 type=file>
<input type="button" value="测试" onclick="txtText1.value=fileFile1.value">
</form>
function test(){
var str1=document.Form1.fileFile1.value;
var regstr=/\\/;
var regresult=new RegExp(regstr)
var sss=str1.split(regresult,'100');
var need=sss[sss.length-1];
var a=need.split('.');
document.Form1.txtText2.value=a[0];
document.Form1.txtText3.value=a[1];
}</script>
<body>
<form name=Form1>
File Input:<input name=fileFile1 type=file><br>Text1:<input name=txtText1 type="text" size=60><br>
Text2:<input name=txtText2 type="text"><br>
Text3:<input name=txtText3 type="text"><br>
<input type="button" value="测试" onclick="txtText1.value=fileFile1.value"><br><br>
<input type="button" value="转换" onclick="test()">
</form>
</body>