Call Windows's shell, but there are security issues.
* This file defines the Browsefolder () function, which provides a folder selection dialog box
* or copy the following code directly to <script language= "javascript" >...</script> tags;
* Special attention is, due to security issues, you also need to set the following to make this JS code correctly run,
* 2, Second: Trusted Site Security Level customization Settings: Set the following options
* "Initialize and script ActiveX controls that are not marked as safe"----"Enabled"
2. Solution II:
Write yourself a JS read the local hard drive selection box, the disadvantage is that the appearance of a little less than the previous.
<meta http-equiv= "Content-type" content= "text/html; charset=gb2312 ">
<title> Untitled Document </title>
<body>
<table border= "0" cellpadding= "0" width= "100%" id= "Tb_show" >
<tr>
<TD width= "18%" > File save location:</td>
<TD width= "82%" >
<%--<input name= "Backdir" type= "text" value = "C:\" size= "M" width= "M" >
</td>
</tr>
<tr>
<td> Directory Location:</td>
<td>
<select name= "tables_drive" id= "tables_drives" onchange= "get_drives ()" ></select>
</td>
</tr>
<tr>
<TD colspan= "2" >
<select name= "Table_folder" id= "Table_folder" size= "ten" multiple Ondblclick= "Get_file ()" ></select>
</td>
</tr>
<tr>
<TD colspan= "2" >
<font color= "Red" > Description: Double-click an option in the list box to display the folder below the folder in the list box. The first one is the root directory </font>
</td>
</tr>
</table>
</body>
<script>
/**//*
* Initialize, put all the drives of the system into the Table_drives list
*/
Window.onload = new function init ()
{
var fso, S, N, E, x;
FSO = new ActiveXObject ("Scripting.FileSystemObject");
E = new Enumerator (FSO. drives);
s = "";
for (;!e.atend (); E.movenext ())
{
x = E.item ();
s = s + x.driveletter;
S + + ":";
if (X.drivetype = 3)
n = x.sharename;
else if (X.isready)
n = x.volumename;
Else
n = "[Drive not Ready]";
s + = n + ",";
}
var drives = S.split (",");
var tabledrives = document.getElementById ("tables_drives");
for (var i = 0; i < drives.length-1; i++)
{
var option = document.createelement ("option");
Drives[i].split (":");
Option.value = "[" +drives[i].split (":") [0]+ ":]" +drives[i].split (":") [1];
Option.text = "[" +drives[i].split (":") [0]+ ":]" +drives[i].split (":") [1];
Tabledrives.add (option);
}
}
/**//*
*tables_drives all folders in the selected drive list into the Table_folder list
*/
function Get_drives ()
{
var tabledrives = document.getElementById ("tables_drives");
var tablefolders = document.getElementById ("Table_folder");
for (var i = 0; i < tableDrives.options.length; i++)
{
if (tabledrives.options[i].selected = = True)
{
var fso, F, FC, S;
var drive = Tabledrives.options[i].value.split (":") [0].substring (1,tabledrives.options[i].value.split (":") [0]. length);
document.getElementById ("Backdir"). Value = drive + ": \ \";
FSO = new ActiveXObject ("Scripting.FileSystemObject");
if (FSO). Driveexists (drive))
{
D = fso. Getdrive (drive);
if (D.isready)
{
f = fso. GetFolder (D.rootfolder);
FC = new Enumerator (f.subfolders);
s = "";
for (;! Fc.atend (); Fc.movenext ())
{
S + + Fc.item ();
S + + ",";
}
var len = tableFolders.options.length;
while (len >= 0)
{
TableFolders.options.remove (len);
len--;
}
var option = document.createelement ("option");
Option.value = drive + ": \ \";
Option.text = drive + ": \ \";
Tablefolders.add (option);
var folders = S.split (",");
for (j = 0; J < Folders.length-1; J + +)
{
option = document.createelement ("option");
Option.value = Folders[j];
Option.text = Folders[j];
Tablefolders.add (option);
}
}
Else
{
Alert ("Cannot change the current content!") ")
}
}
Else
return false;
}
}
}
/**//*
*table_folder Double-click an option in the option to display the folder below the folder in the Table_folder list.
*/
function Get_file ()
{
var tablefolders = document.getElementById ("Table_folder");
var tabledrives = document.getElementById ("tables_drives");
for (var i = 0; i < tableFolders.options.length; i++)
{
if (tablefolders.options[i].selected = = True)
{
var fso, F, FC, S;
var folderpath = tablefolders.options[i].value.substring (0,tablefolders.options[i].value.length);
if (Folderpath.charat (folderpath.length-1) = = "\")
{
document.getElementById ("Backdir"). Value = FolderPath;
}
Else
{
document.getElementById ("Backdir"). Value = FolderPath + "\";
}
FSO = new ActiveXObject ("Scripting.FileSystemObject");
f = fso. GetFolder (FolderPath);
FC = new Enumerator (f.subfolders);
s = "";
for (;! Fc.atend (); Fc.movenext ())
{
S + + Fc.item ();
S + + ",";
}
var len = tableFolders.options.length;
while (len >= 0)
{
TableFolders.options.remove (len);
len--;
}
var opt = "";
var opt1 = "";
for (j = 0; J < folderpath.split ("\"). Length; j + +)
{
var option = document.createelement ("option");
opt = opt + folderpath.split ("\") [j]+ "\"];
if (J > 0)
{
OPT1 = opt;
Option.value = opt1.substring (0,opt1.length-1);
Option.text = opt1.substring (0,opt1.length-1);
Tablefolders.add (option);
}
Else
{
Option.value = opt;
Option.text = opt;
Tablefolders.add (option);
}
}
if (Tablefolders.options[0].value = = Tablefolders.options[1].value)
{
TableFolders.options.remove (1);
}
if (S!= "")
{
var folders = S.split (",");
for (j = 0; J < Folders.length-1; J + +)
{
option = document.createelement ("option");
Option.value = Folders[j];
Option.text = Folders[j];
Tablefolders.add (option);
}
}
}
}
}
</script>
If you still have a good solution, please share the reply.
