谁能将这段VBScript代码转换成javascript代码。拜托：（另外：For each是什么意思啊）
<%
Dim mySmartUpload, item, value, file
' 先如下创建组件
Set mySmartUpload = Server.CreateObject("aspSmartUpload.SmartUpload")

mySmartUpload.Upload

' 用 For Each 循环获取 From表单中每一项的值
For each item In mySmartUpload.Form
    For each value In mySmartUpload.Form(item)
        Response.Write(item & " = " & value & "
")
Next
Next

Response.Write "

---

"
' 上传文件数据
' Response.Write("文件数目 =" & mySmartUpload.Files.Count &"
")
Response.Write("总字节 = " & mySmartUpload.Files.TotalBytes &" bytes

")
Response.Write("文件清单: " & "
")

' 对每一个文件 - 还有更简单的方法, 见wuf33.asp
For each file In mySmartUpload.Files
    If not file.IsMissing Then
        '以原来的文件名存于 C:\temp 下
        file.SaveAs("c:\temp\" & file.FileName)
        Response.Write(file.FileName & " (" & file.Size & "bytes)
")
    End If
Next
Set mySmartUpload = Nothing
%>