woliveiras

function httpGet(url) {
  return new Promise((resolve, reject) => {
    const request = new XMLHttpRequest();

    request.onload = function () {
      if (this.status === 200) {
        resolve(this.response);
      } else {
        reject(new Error(this.statusText));
      }

woliveiras

function printf(format, …params) {
  console.log('params: ', params);
  console.log('format: ', format);
}

printf('%s %d %.2f', 'adrian', 321, Math.PI); // params: [“adrian”, 321, 3.141592653589793] && “format: %s %d %.2f”

woliveiras

function printf(format) {
  var params = [].slice.call(arguments, 1);
  console.log('params: ', params);
  console.log('format: ', format);
}

printf('%s %d %.2f', 'adrian', 321, Math.PI); // params: [“adrian”, 321, 3.141592653589793] && “format: %s %d %.2f”

woliveiras

var logArguments = function() {
  return arguments;
};

logArguments(1, 2, 3, 4, 5) // > [1, 2, 3, 4, 5]

woliveiras

const numbers = ['1', '2', '3', '4'];

for(const number of numbers) {
  console.log(number);
}

woliveiras

function example(x = "The x is the x", y = "The y is the y"){
  x = x;
  y = y;
  console.log(x, y);
}

example(); // “The x is the x” && “The y is the y”

woliveiras

function example(x, y){
  x = x || "The x is the x";
  y = y || "The y is the y";
  console.log(x, y);
}

example(); // “The x is the x” && “The y is the y”

woliveiras

var SUV = (function () {
  function SUVConstructor(model){
    Car.call(this, model);
  }

  SUVConstructor.prototype = Object.create(Car.prototype);
  SUVConstructor.prototype.constructor = Car;
  SUVConstructor.prototype.run = function run() {
  
  Car.prototype.run.call(this);

woliveiras

class SUV extends Car {
  run() {
    super.run();
    console.log(`$And {this.model} climbs up to the mountain`);
  }
}

const jeep = new SUV(‘Jeep’);
jeep.run(); // “Jeep is running more faster than The Flash!” && “And Jeep climbs up to the mountain”

woliveiras

brasilia // > Car {model: “Brasilia”, color: null}
// Utilizando o setter
brasilia.color = "Amarela" // “Amarela”
brasilia // > Car {model: “Brasilia”, color: “Amarela”}
// Utiliando o getter
brasilia.color // "Amarela"