Two solutions to the Javascript folder selection box

Last Update:2018-12-08 Source: Internet

Author: User

Developer on Alibaba Coud: Build your first app with APIs, SDKs, and tutorials on the Alibaba Cloud. Read more ＞

Solution 1:
Windows Shell is called, but security issues may occur.

* Browsefolder. js
* This file defines the browsefolder () function, which provides a folder selection dialog box.
* Allows you to select system folders.
* The start directory of the folder selection dialog box is
* Shell. browseforfolder (window_handle, message, options, strpath) Function
* Strpath parameter settings
* Example: 0x11 -- my computer
* 0 -- Desktop
* "C: \" -- System Drive C
*
* Use the followingCodeApply this function to an HTML file:
* <SCRIPT src = "browsefolder. js"> </SCRIPT>
* Copy the following code directly to the <script language = "JavaScript">... </SCRIPT> tag;

* Note that due to security issues, you still need to set the following settings to make the JS Code run correctly,
* Otherwise, "no permission" may occur.
*
* 1. Set a trusted site (for example, a local site can be http: // localhost)
* 2. Second, set the following options in the custom settings for trusted site security level:
* "Initialize ActiveX controls that are not marked as secure and run scripts" ---- "enable"

browserfolder. JS: copy Code the code is as follows: /** // ***
path: ID of the object whose value is to be displayed
*****/
function browsefolder (PATH) {
try {
var message = "\ u8bf7 \ u9009 \ u62e9 \ u6587 \ u4ef6 \ u5939 "; // The selection box prompts
var shell = new activexobject ("shell. application ");
var folder = shell. browseforfolder (0, message, 64, 17); // start Directory: My computer
// var folder = Shell. browseforfolder (0, message, 0); // start Directory: desktop
If (folder! = NULL) {
folder = folder. items (); // returns the folderitems object
folder = folder. item (); // returns the folderitem object
folder = folder. path; // return path
If (folder. charat (folder. length-1 )! = "\") {
folder = folder + "\";
}< br> document. getelementbyid (PATH ). value = folder;
return folder;
}< BR >}< br> catch (e) {
alert (E. message);
}< BR >}

When using:Copy codeThe Code is as follows: <TD>
<Input type = "text" name = "path"/>
</TD>
<TD>
<Input type = "button" onclick = "browsefolder ('path ')"
Value = "select the generated path"/>
</TD>

2. solution 2:
Write your own JS selection box to read the local hard disk. The disadvantage is that it looks worse than the previous one. <HTML>Copy codeThe Code is as follows: <Meta http-equiv = "Content-Type" content = "text/html; charset = gb2312">
<Title> untitled document </title>
</Head>
<Body>
<Table border = "0" cellpadding = "0" width = "100%" id = "tb_show">
<Tr>
<TD width = "18%"> file storage location: </TD>
& Lt; TD width = "82%" & gt;
<% -- <HTML: file property = "file" size = "40" styleclass = "inputbox"/> -- %>
<Input name = "backdir" type = "text" value = "C: \" size = "100" width = "500">
</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">
<Font color = "red"> Note: Double-click an option in the list box to display the folders in the list box. The first is the root directory. </font>
</TD>
</Tr>
</Table>
</Body>
</Html>
<SCRIPT>
/**//*
* Initialize and put all the system drivers 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 );
}
}

/** // *
* put all the folders on the drive selected in the tables_drives list into the table_folder list
*/
function get_drives ()
{< br> var tabledrives = document. getelementbyid ("tables_drives");
var tablefolders = document. getelementbyid ("table_folder");
for (VAR I = 0; I {< br> If (tabledrives. options [I]. selected = true)
{< br> 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)
{< br> d = FSO. getdrive (drive);
If (D. isready)
{< br> F = FSO. getfolder (D. rootfolder);
fc = new enumerator (F. subfolders);
S = ""; (;! FC. atend (); FC. movenext ()
{< br> S + = FC. item ();
S + = ",";
}

/** // *
* double-click an option in table_folder to display the folders in the table_folder list.
*/
function get_file ()
{< br> var tablefolders = document. getelementbyid ("table_folder");
var tabledrives = document. getelementbyid ("tables_drives");
for (VAR I = 0; I {< br> If (tablefolders. options [I]. selected = true)
{< br> var FSO, F, FC, s;
var folderpath = tablefolders. options [I]. value. substring (0, tablefolders. options [I]. value. length);
If (folderpath. charat (folderpath. length-1) = "\")
{< br> document. getelementbyid ("backdir "). value = folderpath;
}< br> else
{< br> document. getelementbyid ("backdir "). value = folderpath + "\";
}

FSO = new activexobject ("scripting. fileSystemObject ");
F = FSO. getfolder (folderpath);
fc = new enumerator (F. subfolders);
S = "";
(;! FC. atend (); FC. movenext ()
{< br> S + = FC. item ();
S + = ",";
}< br> var Len = tablefolders. options. length;
while (LEN> = 0)
{< br> tablefolders. options. remove (LEN);
Len --;
}< br> var opt = "";
var opt1 = "";
for (j = 0; j {< br> var option = document. createelement ("option");
opt = opt + folderpath. split ("\") [J] + "\";
If (j> 0)
{< br> opt1 = OPT;
option. value = opt1.substring (0, opt1.length-1);
option. TEXT = opt1.substring (0, opt1.length-1);
tablefolders. add (option);
}< br> else
{< br> 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 have a good solution, please reply and share it.

This article is an English version of an article which is originally in the Chinese language on aliyun.com and is provided for information purposes only. This website makes no representation or warranty of any kind, either expressed or implied, as to the accuracy, completeness ownership or reliability of the article or any translations thereof. If you have any concerns or complaints relating to the article, please send an email, providing a detailed description of the concern or complaint, to info-contact@alibabacloud.com. A staff member will contact you within 5 working days. Once verified, infringing content will be removed immediately.

A Free Trial That Lets You Build Big!

Start building with 50+ products and up to 12 months usage for Elastic Compute Service

Get Started for Free

Sales Support

1 on 1 presale consultation

Chat Contact Sales
After-Sales Support

24/7 Technical Support 6 Free Tickets per Quarter Faster Response

Open a Ticket
Alibaba Cloud offers highly flexible support services tailored to meet your exact needs.

Learn More

Two solutions to the Javascript folder selection box

Contact Us

A Free Trial That Lets You Build Big!

Sales Support

After-Sales Support