DavidMellul

let x = [1,2,3,4,5];
let y = [];

for(let i = 0; i < x.length; i++)
  if(x[i] % 2 == 0)
    y.push(x[i]*2);
  else
    continue; 

console.log(y);

DavidMellul

let x = [1,2,3,4,5];
let y = x.map ( element => element*2 );

console.log(y);

// => [2,4,6,8,10]

DavidMellul

let x = [1,2,3,4,5];
let y = [];

for(let i = 0; i < x.length; i ++)
  y[i] = x[i]*2;

console.log(y);

// => [2,4,6,8,10]

DavidMellul

let x = 5;
let expected = 8;

console.log(`Content of variable x is: ${x} and expected is ${expected}`);

// => Content of variable x is: 5, and expected is 8

DavidMellul

let x = 5;
let expected = 8;

console.log('Content of variable x is: ' + x + ', and expected is ' + expected);

// => Content of variable x is: 5, and expected is 8

DavidMellul

const PRECISION = 0.2; // Often called a Delta

function isValid(time) { // Ensures 1 second has elapsed
  const expected = 1; 
  
  // We only assert this :  (expected - precision) <= time <= (expected + precision) 
  return (expected - PRECISION <= time) && (expected + PRECISION >= time);
}

console.log(isValid(1.105));

DavidMellul

var torchRunning = false; 
var startTime = new Date();

function sleep(milliseconds) { // A basic sleep implementation to "pause" the current thread
  var start = new Date().getTime();
  for (var i = 0; i < 1e7; i++) {
    if ((new Date().getTime() - start) > milliseconds){
      break;
    }
  }

DavidMellul

var lightPlugged = false;

function switchLight() 
{
  lightPlugged = !lightPlugged;
}

console.log( lightPlugged ? 'Light is on':'Light is off');
// => Light is off

DavidMellul

var lightPlugged = false;

function switchLight() 
{
  if(lightPlugged == false)
    lightPlugged = true;
  else 
    lightPlugged = false;
}

DavidMellul

function databaseCrashed() {
  return true; 
}

function leaveBuilding() {
  console.log('We are safe'); 
}

function stayInBuilding() {
  console.log('We are working hard in here');