Code to implement Windows Task Manager using Javascript_javascript skills

When many people mention JS, they may think of web pages. In fact, JS can also take the initiative and do things that other languages ​​can do. It can even dominate the browser instead of being dominated by the browser.
This article will introduce a truly usable Windows task manager built on the WSH platform and implemented through JS.
1: Code and comments

Copy code The code is as follows:

/*
JS Task Manager
By:X!ao_f
Mail:Xiao_f.mail@163.com
QQ:120000512
*/
/ /Create an object Shell object, which provides basic functions such as pop-up prompt boxes, running processes, and operating registry.
var shell = WScript.CreateObject("WScript.Shell");
//Create a WMI object. System management can be achieved through WMI, which includes the process management part.
var wmi = WScript.CreateObject( "WbemScripting.SWbemLocator").ConnectServer(".", "root\cimv2");
//Create an IE window for data output
var browser = WScript.CreateObject("InternetExplorer.Application" ; >
function foreach(object, fn){
var i = 0;
for(var e = new Enumerator(object);!e.atEnd();e.moveNext()){
fn(i, e.item());
}
}

//Initialization window
~function(){
browser.navigate("about:blank" );
browser.visible=false
browser.document.write('





');
//Wait for the browser to load
while(browser.Busy) WScript.Sleep(100);
//Set the browser appearance
browser.document.title = "Process Manager"
browser.toolBar = false;
browser.statusBar = false;
browser.fullScreen = true;
var w = browser.width;
var h = browser.height;
browser. fullScreen = false;
browser.width = w;
browser.height = h;
browser.left = 0;
browser.top = 0;
window = browser.document.parentWindow ;
//Create a button and bind events
var button = browser.document.createElement("button");
button.innerHTML = "New process..";
button.onmousedown = open;
browser.document.body.appendChild(button);

var button = browser.document.createElement("button");
button.innerHTML = "Refresh list";
button.onmousedown = refresh;
browser.document.body.appendChild(button);

var divList = browser.document.createElement("div");
divList.id = "divList ";
browser.document.body.appendChild(divList);

//Callback function to end the process
browser.document.__kill__ = function(pid){
var process = wmi .ExecQuery("Select * From Win32_Process Where ProcessID = '" pid "'")
foreach(process, function(i, o){
o.terminate();
});
};
browser.visible = true
}()

//Update list
function update(msg){
browser.document.body.all.divList.innerHTML = msg;
}

//New process
function open(){
//Because the first pop-up dialog box will be blocked by the browser window, hiding the browser can solve this problem Question
if(!commonDialog.Filter){
browser.visible=false
browser.visible=true
}
//Here set the filtering rules for opening the dialog box
commonDialog. Filter = "All types (*.*)";
commonDialog.DialogTitle = "Process Manager - Select File";
commonDialog.MaxFileSize = 260;
commonDialog.CancelError = false;
/ / Opening the dialog box in a delayed manner can ensure that it is displayed at the front end
window.setTimeout(function(){
commonDialog.ShowOpen();
var path = commonDialog.Filename;
//Path If it is not empty, it can be regarded as pressing the OK button, and use the shell to execute the path
if(path){
shell.run('"' path ''');
commonDialog.Filename = '';
listProcess();
}
},10);
}

//Refresh
function refresh(){
listProcess();
}

//The main function for processing the process list
function listProcess(){
//Here we first query the basic information of all processes through WMI. You can query relevant information about how to use WMI. Or run wmic -? under cmd to view the help information. I won’t introduce it in detail here.
var process = wmi.ExecQuery("Select * from Win32_Process");
var p1 = {};
var p2 = {};
//Calculate the CPU usage below, quote: http ://www.techish.net/2009/03/get-process-cpu-usage-using-wmi/
var data1 = wmi.ExecQuery("select * from Win32_PerfRawData_PerfProc_Process");
foreach(data1, function(i, object){
p1[object.IDProcess] = object;
});
WScript.sleep(1000)
var data2 = wmi.ExecQuery("select * from Win32_PerfRawData_PerfProc_Process" );
foreach(data2, function(i, object){
p2[object.IDProcess] =
(p1[object.IDProcess].PercentProcessorTime - object.PercentProcessorTime)/
(p1[ object.IDProcess].TimeStamp_Sys100NS - object.TimeStamp_Sys100NS) * 100;
});
//Generate table and update
var table = [];
var memSum = 0;
var cpuSum = 0;
table.push('' ['serial number','PID','name','operation','CPU usage','memory usage',' Path'].join('') '');
foreach(process, function(i, object){
var tr = [];
var td = [];
td.push(i);
td.push(object.processid);
td.push(object.name);
td.push('End< ;/span>');
td.push((~~(p2[object.ProcessID]*100))/100);
td.push((~~((object.WorkingSetSize/1024/ 1024)*100))/100 'MB');
td.push((object.executablepath||'-') ' ');
memSum =(object.WorkingSetSize/1024/1024);
if(object.processid!=0){
cpuSum =p2[object.ProcessID];
}
tr.push('' td.join( '') '');
table.push(tr);
});
table.push(' Memory usage:' ((~~(memSum*100))/100) 'MB' ',CPU usage:' ((~~(cpuSum*100))/100 ) '%');
table='' table.join('') ''
update(table);
}

//There needs to be a loop here because the WScript process is separate from the browser process. If there is no loop, WScript will end when the program is executed here.
try{
while(!browser.Closed) { try{refresh();}catch(e){}; WScript.Sleep(1000) };
}catch(e){}

Operating effect:

2. Source code download
Process.rar
Running method: The premise is Windows operating system. If the opening method of .js has not been specially set, double-click it. It can be run. If it is associated with an IDE, you need to select the opening method as "Microsoft Windows Based Script Host";