JS ACTIVEX implements the web page selection local directory path dialog box_javascript skills

The web page selects the local directory path dialog box, uses the ACTIVEX object to traverse the local disk and directory, and only needs to enable the relevant ACTIVEX INTERNET option on the web page. It does not require high security for the local browser and is simple and easy to use.

Web page select local directory path dialog box example

1. Open the main page "select.html", click the "Select Path" button to enter the path selection page "dir.html", and select the local directory path

2. After the path selection page "dir.html" is initialized, load the local disk drive, and then load the directories in it according to the selected disk path. If there are subdirectories in the directory, double-click the directory list item to enter the next episode directory.

3. Click "OK" to close the selection path page "dir.html" and return the selected path value to the "select.html" text box on the main page

Copy code The code is as follows:

/**//*
* Initialization, put all the drives in 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 = "[驱动器未就绪]";
s = n ",";
}
var drives = s.split(",");
var tableDrives = document.getElementById("tables_drives");
for ( var i = 0; 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);
}
get_drives();
}

/**//*
*All folders on the drive selected in the tables_drives list are placed in the table_folder list
*/
function get_drives()
{
var tableDrives = document.getElementById("tables_drives");
var tableFolders = document.getElementById("table_folder");
for ( var i = 0; 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 {
option = document.createElement("OPTION");
option.value = folders[j];
option.text = folders[j];
tableFolders.add(option);
}
}
else
{
alert("无法改变当前内容！")
}
}
else
return false;
}
}
}
function get_fileName()
{

var tableFolders = document.getElementById("table_folder");
for ( var i = 0; i {
if ( tableFolders.options[i].selected == true )
{
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 "\";
}
}
}
}
/**//*
*table_folder双击选项中的一个选项，就将该文件夹下面的文件夹显示在table_folder列表中。
*/
function get_file()
{
var tableFolders = document.getElementById("table_folder");
var tableDrives = document.getElementById("tables_drives");
for ( var i = 0; 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 {
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 {
option = document.createElement("OPTION");
option.value = folders[j];
option.text = folders[j];
tableFolders.add(option);
}
}
}
}
}