sevperez

var someValue = "Hello, world!";
console.log("Type of someValue:", typeof someValue);
  // Logs: Type of someValue: string

someValue = 2018;
console.log("Type of someValue:", typeof someValue);
  // Logs: Type of someValue: number

someValue = {};
console.log("Type of someValue:", typeof someValue);

sevperez

console.log("\"string\" type:", typeof "string");   // Logs: "string" type: string

console.log("7 type:", typeof 7);                   // Logs: 7 type is: number

console.log("7.5 type:", typeof 7.5);               // Logs: 7.5 type is: number

console.log("true type:", typeof true);             // Logs: true type: boolean

console.log("undefined type:", typeof undefined);   // Logs: undefined type: undefined

sevperez

function isPalindrome(str) {
  var reverse = str.split("").reverse().join("");
  return str === reverse;
}

function getCharCounts(chars) {
  var charCounts = {};
  for (var i = 0, charLen = chars.length; i < charLen; i += 1) {
    if (charCounts[chars[i]]) {
      charCounts[chars[i]] += 1;

sevperez

function Robot(name, job) {
  this.name = name;
  this.job = job;
}

Robot.prototype.introduce = function() {
  console.log("Hi! I'm " + this.name + ". My job is " + this.job + ".");
};

var bender = new Robot("Bender", "bending");

sevperez

function makeCalendar(name) {
  var calendar = {
    owner: name,
    events: [],
  };
  
  return {
    addEvent: function(event, dateString) {
      var eventInfo = {
        event: event,

sevperez

function schedulerMaker(name) {
  return function(event) {
    return function() {
      console.log(event + " with " + name + ".");
    };
  };
}

var adaScheduler = schedulerMaker("Ada");
var coffeeWithAda = adaScheduler("Coffee");

sevperez

function makeEventDescriber(event, date) {
  return function() {
    console.log(date + ": " + event);
  };
}

var coffeeWithAda = makeEventDescriber("Coffee with Ada.", "8/1/2018");
var partyAtCharles = makeEventDescriber("Party at Charles' house.", "8/4/2018");

coffeeWithAda();          // Logs: "8/1/2018: Coffee with Ada."

sevperez

var event = "Coffee with Ada.";

function describeEvent() {
  console.log(event);
}

function calendar() {
  var event = "Party at Charles' house.";
  
  describeEvent();

sevperez

var event = "Coffee with Ada.";

function calendar() {
  var event = "Party at Charles' house.";
  
  console.log(event);
}

calendar();               // Logs: "Party at Charles' house."

sevperez

function Robot(name, job) {
  this.name = name;
  this.job = job;

  this.introduce = function() {
    console.log("Hi! I'm " + this.name + ". My job is " + this.job + ".");
  };
}

function AI(name, job, intelligenceLevel) {