umair-khanzada

sudo nohup npm start &

shahzadns

/*
Date: Jan 19 2017
title: NodeJS enhanced CJS module pattern
author: Shahzad Nawaz
email: shahzadscs@gmail.com
Description:
This gist proposes an enhanced CommonJS module declaration pattern for nodeJS/express modules.
*/

umair-khanzada

//Reverse string in javascript.

var str = "your string";

str.split('').reverse().join('');

//using ES6 is more easy.

[...str].reverse().join('');

umair-khanzada

let lsb = ['', 'one', 'two', 'three', 'four', 'five', 'six', 'saven', 'eight', 'nine'],
mid = ['', 'ten', 'tweenty', 'therty', 'fourty', 'fifty', 'sixty', 'saventy', 'eighty', 'ninty'], 
msb = ['', 'one hundred', 'two hundred', 'three hundred', 'four hundred', 'five hundred', 'six hundred', 'saven hundred', 'eight hundred', 'nine hundred'],
num = 445;
input = String(num);

let msbBit = Number(input[0]),
midBit = input.length > 1 ? Number(input[1]) : 0,
lsbBit = input.length > 2 ? Number(input[2]) : 0;

umair-khanzada

let array = [{ id: 1, name: 'umair', age: 14 }, { id: 2, name: 'zubair', age: 16 }, { id: 3, name: 'owais', age: 20 }];

//get any field/key of obj using map.

let idsArray = array.map( (obj) => obj.id );

//result ids = [1, 2, 3]

//get special object from array using find.

umair-khanzada

//Array syntax
let promises = [promiseOne(), promiseTwo(), promiseThree()];

$q.all(promises).then((values) => {
    console.log(values[0]); // value One
    console.log(values[1]); // value Two
    console.log(values[2]); // value Three
  
//   do something

erans

var crypto = require("crypto")

function encrypt(key, data) {
        var cipher = crypto.createCipher('aes-256-cbc', key);
        var crypted = cipher.update(data, 'utf-8', 'hex');
        crypted += cipher.final('hex');

        return crypted;
}

crtr0

// set-up a connection between the client and the server
var socket = io.connect();

// let's assume that the client page, once rendered, knows what room it wants to join
var room = "abc123";

socket.on('connect', function() {
   // Connected, let's sign-up for to receive messages for this room
   socket.emit('room', room);
});