javascript有个特殊的对象ActiveXObject，通过它可以访问windows的本地文件系统和应用程
序，
比如：有的时候我们需要得到用户的机器名，用户名，得到某个文件的信息，或者读写注册表，或者启动计算器、outlook等应用程序。
//取得机器名，登录域及登录用户名
function getusername()
{
var WshNetwork = new ActiveXObject("WScript.Network");
alert("Domain = " + WshNetwork.UserDomain);
alert("Computer Name = " + WshNetwork.ComputerName);
alert("User Name = " + WshNetwork.UserName);
}
window.onload=getusername;
//取得系统目录
function getprocessnum()
{
var pnsys=new ActiveXObject("WScript.shell");
pn=pnsys.Environment("PROCESS");
alert(pn("WINDIR"));
}
window.onload=getprocessnum;//显示C:/WINDOWS
//返回系统中特殊目录的路径
function getspecialfolder()
{
var mygetfolder=new ActiveXObject("WScript.shell");
if(mygetfolder.SpecialFolders("Fonts")!=null)
{
alert(mygetfolder.SpecialFolders("Fonts"));
}
}
window.onload=getspecialfolder;//显示C:/WINDOWS/fonts
//取得磁盘信息 传入参数如：getdiskinfo('c')
function getdiskinfo(para)
{
var fs=new ActiveXObject("scripting.filesystemobject");
d=fs.GetDrive(para);
s="卷标:" + d.VolumnName;
s+="------" + "剩余空间:" + d.FreeSpace/1024/1024 + "M";
s+="------" + "磁盘序列号:" + d.serialnumber;
alert(s)
}
window.onload=getdiskinfo('d');
//取得系统目录
function getprocessnum()
{
var pnsys=new ActiveXObject("WScript.shell");
pn=pnsys.Environment("PROCESS");
alert(pn("WINDIR"));
}
window.onload=getprocessnum;//显示C:/WINDOWS
//启动计算器
function runcalc()
{
var calc=new ActiveXObject("WScript.shell");
calc.Run("calc");
}
window.onload=runcalc;
//写注册表
function writereg()
{
var mywritereg=new ActiveXObject("WScript.shell");
try{
mywritereg.RegWrite("HKEY_LOCAL_MACHINE//SOFTWARE//Microsoft//Windows//CurrentVersion//Run//MyTest","c://mytest.exe");
alert("写入成功！");
}
catch(e)
{
alert("写入路径不正确！");
}
}
window.onload=writereg;
//读取注册表中的值
function readreg()
{
var myreadreg=new ActiveXObject("WScript.shell");
try{
alert(myreadreg.RegRead ("HKEY_LOCAL_MACHINE//SOFTWARE//Microsoft//Windows//CurrentVersion//Run//MyTest"));
}
catch(e)
{
alert("读取的值不存在！");
}
}
window.onload=readreg;//显示c:/mytest.exe
//删除注册表
function delreg()
{
var mydelreg=new ActiveXObject("WScript.shell");
if(confirm("是否真的删除？"))
{
try{
mydelreg.RegDelete("HKEY_LOCAL_MACHINE//SOFTWARE//Microsoft//Windows//CurrentVersion//Run//MyTest");
alert("删除成功！");
}
catch(e)
{
alert("删除路径不正确");
}
}
}
window.onload=delreg;
//取得文件信息 调用方式如：getfileinfo('c://TEST.XLS')
function getfileinfo(para)
{
var myfile=new ActiveXObject("scripting.filesystemobject");
var fi=myfile.GetFile(para);
alert("文件类型:"+fi.type+"文件大小:"+fi.size/1024/1024+"M"+"最后一次访问时间:"+fi.DateLastAccessed);
}
window.onload=getfileinfo('c://TEST.XLS');
//取得客户端的信息
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);
}
window.onload=clientInfo;