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Raises an event and passes an object as an argument CODE
Event emitter raises the event called 
messageLogged
and passes the object as an argument
const EventEmitter = require('events');
const emitter = new EventEmitter();

// Register a listener
emitter.on('messageLogged', function(obj) {
  console.log('Listener called', obj);
});

// Raise an event & passes the object
emitter.emit('messageLogged', {key1: 'Value 1', key2: 'Value 2'});
by Valeri Tandilashvili
3 years ago
0
Node
Events
Node.js Tutorial for Beginners - 1 Hour
0
Emit an event & pass arguments CODE
Event emitter raises the event called 
messageLogged
and passes parameters
const EventEmitter = require('events');
const emitter = new EventEmitter();

// Register a listener
emitter.on('messageLogged', function(arg1, arg2) {
  console.log('Listener called', arg2, arg1);
});

// Raise an event
emitter.emit('messageLogged', 'arg-first', 'arg-second');
by Valeri Tandilashvili
3 years ago
0
Node
Events
Node.js Tutorial for Beginners - 1 Hour
0
Event emitter class & emit method CODE
Event emitter raises the event called 
messageLogged
const EventEmitter = require('events');
const emitter = new EventEmitter();

// Register a listener
emitter.on('messageLogged', function() {
  console.log('Listener called');
});

// Raise an event
emitter.emit('messageLogged');
by Valeri Tandilashvili
3 years ago
0
Node
Events
Node.js Tutorial for Beginners - 1 Hour
0
parse_ini_file
The function 
parse_ini_file()
returns the settings as an associative array from 
ini
file
by Valeri Tandilashvili
3 years ago
0
PHP
functions
0
session_write_close
Sessions automatically end when the PHP script finishes executing but can be manually ended using the 
session_write_close()
function
by Valeri Tandilashvili
3 years ago
0
PHP
0
ctype_alnum
function 
ctype_alnum
returns true if the value contains only alphanumeric letters. In the example 
IF
statement will be executed because the value is alphanumeric
$var = 'as2df234asdf';

if (ctype_alnum($var)) {
	echo 'if';
} else {
	echo 'else';
}
by Valeri Tandilashvili
3 years ago
0
PHP
functions
0
FS module readdir CODE
Reads the current directory synchronously
const fs = require('fs')

// With Sync function
let files = fs.readdirSync('./')
console.log(files)
Reads the current directory asynchronously
const fs = require('fs')

// With Async function
fs.readdir('./', function(err, files){
    if (err) {
        console.log('Error', err)
    } else {
        console.log(files)
    }
})
by Valeri Tandilashvili
3 years ago
0
Node
Node.js Tutorial for Beginners - 1 Hour
0
OS module CODE
Prints total and free memory using OS built-in module:
const os = require('os')

let totalMemory = os.totalmem()
let freeMemory = os.freemem()

console.log(`Total memory: ${totalMemory}`)
console.log(`Free memory: ${freeMemory}`)
by Valeri Tandilashvili
3 years ago
0
Node
Node.js Tutorial for Beginners - 1 Hour
0
Export object CODE 
logger.js
file exports object which contains only the 
log()
function. Content of the 
logger.js
file:
function log(message) {
  console.log(message)
}

module.exports.log = log
The 
log()
function is called in the 
index.js
file:
const logger = require('./logger')

logger.log('some text')
by Valeri Tandilashvili
3 years ago
0
Node
Node.js Tutorial for Beginners - 1 Hour
0
Export function CODE 
logger.js
file exports 
log()
function. Content of the 
logger.js
file:
function log(message) {
  console.log(message)
}

module.exports = log
The 
log()
function is called in the 
index.js
file:
const log = require('./logger')

log('some text')
by Valeri Tandilashvili
3 years ago
0
Node
Node.js Tutorial for Beginners - 1 Hour
0
Results: 1578