Appends the content of txt to the end of file filename file. File is created if if does not exist.

Example:

	var s = "Hello, world\r\n";
	if( !Append("/tmp/test.txt", s) ) {
		Print("Error");
	}

Decodes the string txt from base64.

Example:

	var s = "SGVsbG8sIHdvcmxkIQ==";
	var res = base64Decode(s);
	Print(res);
	

Encodes the string txt to base64.

Example:

	var s = "Hello, world!";
	var res = base64Encode(s);
	Print(res);
	

Method clears a timer set with the setInterval() method. If the parameter provided does not identify a previously established action, this method does nothing.

Example:

	var theIntervalId = setInterval( function() {}, 1000);
	clearInterval ( theIntervalId );
	

Cancels a timeout previously established by calling setTimeout(). If the parameter provided does not identify a previously established action, this method does nothing.

Example:

	var theTimeoutId = setTimeout( function() {}, 1000);
	clearTimeout ( theTimeoutId );
	

Reads file names in specified directory. Not recursive.

Each object has the following fields

Example:

	var files = Dir( "." );
	Print ( JSON.stringify ( files ) );

	/*** Example of possible output: ***/

	[{
		"name": ".storage",
		"size": 145,
		"mtime": 1691077935.209,
		"type": "F"
	}, {
		"name": "autotest",
		"size": 0,
		"mtime": 1684428159.011,
		"type": "D"
	}, {
		"name": "release",
		"size": 0,
		"mtime": 1690964371.008,
		"type": "D"
	}, {
		"name": "test.js",
		"size": 1500,
		"mtime": 1690880002.712,
		"type": "F"
	}]
	

--

Example:

Exits current worker. Other workers will continue running.

Example:

	Exit( );
	

Returns the name of current worker

Example:

	var s = getName( );
	Print( "Name is: " + s );
	

Returns the global application tag name

Example:

	var s = getTag( );
	Print( "Tag is: " + s );
	

Makes HTTP request and returns immediately. Asynchronous.

After request is complete, the callback function func is called with an object as parameter. Return value of callback function is ignored. The object has the following fields:

Example:

	Http(callback, "https://www.tiktok.com/robots.txt");

	function callback( res ) {
		Print( JSON.stringify ( res ) );
	}
	
	// Example of possible output:
	
	{
		"socket": 2,
		"index": 0,
		"closed": true,
		"data": "User-agent: Baiduspider\nDisallow: /\n",
		"headers": [
			"HTTP/1.0 200 OK",
			"Server: nginx",
			"Content-Type: text/plain; charset=utf-8",
			"Content-Encoding: gzip",
			"Content-Length: 233",
			"Connection: close"
		]
	}
	

Loads and evaluates local javascript file. Synchrous.

Example:

	Include( "/home/myuser/test.js" );
	

--

Example:

Calculates MD5 checksum of message txt.

Example:

	var hash = MD5( "Hello" );
	Print( "hash=" + hash );
	

Returns current computer's external IP address..

Example:

	var ip = MyIP( );
	Print( "my IP is " + ip );
	

Returns number of active network connections for current worker.

Example:

	var num = numSockets( );
	Print( "number of sockets is " + num );
	

Returns number of active timers in current worker (timers are created by setTimeout and setInterval functions).

Example:

	var num = numTimers( );
	Print( "number of timers is " + num );
	

Breaks the provided URL into parts.

The function returns the object which consists of the following fields:

Example:

	var url = "https://www.google.com/search?client=opera&q=sb-core&sourceid=opera&ie=UTF-8&oe=UTF-8";
	var parts = parseUrl ( url );
	Print ( JSON.stringify ( parts ) );
	
	/*** Result: ***/
	
	{
		"scheme": "https",
		"host": "www.google.com",
		"port": 443,
		"path": "/search",
		"query": {
			"client": "opera",
			"q": "sb-core",
			"sourceid": "opera",
			"ie": "UTF-8",
			"oe": "UTF-8"
		}
	}
	

Outputs specified string(s) to both stdout and log file.

Example:

	Print( "A", 5+6, "B" + 22 );
	
	// The output:
	A11B22
	

Reads content of local file. Synchrous.

Example:

	var s = Read( "/some/file.txt" );
	Print( "File content: ", s);
	

Sends message txt to socket. Asynchrous.

Example:

	Http(callback, "wss://websocketstest.com/service");
	
	function callback( res ) {
		// dump the data
		Print("WebsocketTest: ", JSON.stringify(res));
		// when connected, request the timer
		if( res.index == 0 )
			Send( res.socket, "timer," );
		// close connection after 5th received frame
		if( res.index == 5 )
			Send( res.socket, null );
	}
	
	// the output:
	
	WebsocketTest: {"socket":2,"index":0,"headers":[
			"HTTP/1.1 101 Switching Protocols",
			"Date: Sat, 05 Aug 2023 17:38:14 GMT",
			"Connection: upgrade",
			"Upgrade: WebSocket",
			"Sec-WebSocket-Accept: s6ZgSKRlTXz3xV2tQzO0GM58iKc="]}
	WebsocketTest: {"socket":2,"index":1,"data":"connected,"}
	WebsocketTest: {"socket":2,"index":2,"data":"time,2023/8/5 17:38:21"}
	WebsocketTest: {"socket":2,"index":3,"data":"time,2023/8/5 17:38:22"}
	WebsocketTest: {"socket":2,"index":4,"data":"time,2023/8/5 17:38:23"}
	WebsocketTest: {"socket":2,"index":5,"data":"time,2023/8/5 17:38:24"}
	WebsocketTest: {"socket":2,"index":6,"closed":true}
	

Creates a timer.

Example:

	function T ( ) {
		Print(" timer! ");
	}
	setInterval( T, 1000 ); // every 1 second
	

Sets name of current worker.

Parameters:
txt - worker name.

Return value: None.

Example:

	setName( "MyThread" );
	

Sets application tag name.

Example:

	setTag( "MyTag" );
	

Creates a timer to be fired only once.

Example:

	function T ( ) {
		Print(" timer! ");
	}
	setTimeout( T, 1000 ); // will be fired in 1 second
	

--

Example:

Returns SHA1 checksum of txt.

Example:

	var s = SHA1( "Hello, world!" );
	Print ( s );
	// The output: 943A702D06F34599AEE1F8DA8EF9F7296031D699
	

Executes the command cmd, waits for cmd to exit, and returns output of cmd (stdout) as a string.

Example:

	var s = System( "cat /some/file.txt" );
	Print ( s );
	

Returns true if WiFi is enabled and active when running under Android OS, or false otherwise. For Windows and Linux always returns true.

Example:

	var is_connected = WiFi( );
	

Creates new thread and executes the javascript code there. Current thread will not have access to new one.

Example:

	var code = " Print('Hello, world!') ";
	Worker( code );
	

Writes the content of txt to the fpath file. File is created if if does not exist. Content of the file will be overwritten if file exists.

Example:

	var s = "Hello, world\r\n";
	if( !Write("/tmp/test.txt", s) ) {
		Print("Error");
	}

Variables

Deployment

Samples

Command line