Ruby to JavaScript Overview

[javascript]ruby-to-javascript-overview.js

var numbers = [1, 2, 3];

numbers.forEach(function(num, index, array) {
  console.log('I am ' + num)
})

var doubledNumbers = numbers.map(function(num) {
  return num * 2
});

var total = numbers.reduce(function(sum, num) { return sum + num }, 0)

var keyValuePairs = {
  k1: 'v1',
  k2: 'v2'
}

for(key in keyValuePairs) {
  console.log(keyValuePairs[key])
}


function Fish(name, species) {
  this.name = name;
  this.species = species;
  this.milesTravelled = 0;
}

Fish.prototype.swim = function() {
  this.milesTravelled++;
}


var nemo = new Fish('Nemo', 'clown fish')

// AnglerFish's Prototype Chain
// null -> object -> Fish -> AnglerFish


function AnglerFish(name, species, gender) {
  Fish.call(this);
  this.name = name;
  this.species = species;
  this.gender = gender;
  this.mates = [];
}

AnglerFish.prototype.consume = function(maleFish) {
  if(this.gender === 'female') {
    this.mates.push(maleFish);
  }
}



var dory = new AnglerFish('Dory', 'Angler', 'female')
var nemo = new AnglerFish('Nemo', 'Angler', 'male')
dory.swim()
dory.consume(nemo)