JavaScript gets the machine name, user name, read/write registry, launch application

JavaScript gets the machine name, user name, read/write registry, launch application
JavaScript has a special object ActiveXObject, which provides access to the local file system and applications of Windows.
For example: Sometimes we need to get the user's machine name, user name, get the information of a file, or read or write the registry, or start the calculator, Outlook and other applications.

Here are some common methods, each of which has been tested.
<script language= "JavaScript" >
Get machine name, login domain and login user name
function GetUserName ()
{
var wshnetwork = new ActiveXObject ("Wscript.Network");
Alert ("Domain =" + Wshnetwork.userdomain);
Alert ("Computer Name =" + Wshnetwork.computername);
Alert ("User Name =" + Wshnetwork.username);
}

Get the system catalog
function Getprocessnum ()
{
var pnsys=new activexobject ("Wscript.Shell");
Pn=pnsys. Environment ("PROCESS");
Alert (PN ("windir"));
}
Returns the path to a special directory in the system
function GetSpecialFolder ()
{
var mygetfolder=new activexobject ("Wscript.Shell");
if (Mygetfolder. Specialfolders ("Fonts")!=null)
{
Alert (Mygetfolder. Specialfolders ("Fonts"));
}
}
Get the disk information incoming parameters such as: Getdiskinfo (' C ')
function Getdiskinfo (para)
{
var fs=new activexobject ("Scripting.FileSystemObject");
D=fs. Getdrive (para);
S= "Volume Label:" + d.volumnname;
s+= "------" + "remaining space:" + d.freespace/1024/1024 + "M";
s+= "------" + "Disk serial number:" + d.serialnumber;
Alert (s)
}
Get the system catalog
function Getprocessnum ()
{
var pnsys=new activexobject ("Wscript.Shell");
Pn=pnsys. Environment ("PROCESS");
Alert (PN ("windir"));
}
Start Calculator
function Runcalc ()
{
var calc=new activexobject ("Wscript.Shell");
Calc. Run ("Calc");
}
Read the values in the registry
function Readreg ()
{
var myreadreg=new activexobject ("Wscript.Shell");
try{
Alert (Myreadreg. RegRead ("Hkey_local_machine\\software\\microsoft\\windows\\currentversion\\run\\nerocheck"));
}
catch (E)
{
Alert ("The Read value does not exist!") ");
}
}
Write the Registration form
function Writereg ()
{
var mywritereg=new activexobject ("Wscript.Shell");
try{
Mywritereg. RegWrite ("Hkey_local_machine\\software\\microsoft\\windows\\currentversion\\run\\mytest", "C:\\mytest.exe");
Alert ("Write succeeded!") ");
}
catch (E)
{
Alert ("The Write path is incorrect! ");
}
}
Delete Registry
function DelReg ()
{
var mydelreg=new activexobject ("Wscript.Shell");
if (Confirm ("Is it really deleted? "))
{
try{
Mydelreg. RegDelete ("Hkey_local_machine\\software\\microsoft\\windows\\currentversion\\run\\mytest");
Alert ("Delete succeeded! ");
}
catch (E)
{
Alert ("Delete path is incorrect");
}
}
}
Get file information call method: GetFileInfo (' c:\\test.pdf ')
function GetFileInfo (para)
{
var myfile=new activexobject ("Scripting.FileSystemObject");
var fi=myfile. GetFile (para);
Alert ("File type:" +fi.type+ "File Size:" +fi.size/1024/1024+ "M" + "Last Access time:" +fi. datelastaccessed);
}
Get information about the client
function Clientinfo ()
{
strclientinfo= "availheight=" +window.screen.availheight+ "\ n" +
"Availwidth=" +window.screen.availwidth+ "\ n" +
"Bufferdepth=" +window.screen.bufferdepth+ "\ n" +
"Colordepth=" +window.screen.colordepth+ "\ n" +
"colorenable=" +window.navigator.cookieenabled+ "\ n" +
"cpuclass=" +window.navigator.cpuclass+ "\ n" +
"height=" +window.screen.height+ "\ n" +
"Javaenable=" +window.navigator.javaenabled () + "\ n" +
"platform=" +window.navigator.platform+ "\ n" +
"systemlanguage=" +window.navigator.systemlanguage+ "\ n" +
"userlanguage=" +window.navigator.userlanguage+ "\ n" +
"Width=" +window.screen.width;
alert (strclientinfo);
}

</script>

JavaScript gets the machine name, user name, read/write registry, launch application