freeCodeCamp/challenges/object-oriented-and-functional-programming.json

{
  "name": "Object Oriented and Functional Programming \n - \n Under Construction From Challenge 4 Onwards",
  "order" : 0.009,
  "note": [
    "Waypoint: Closures",
    "Waypoint: Factories",
    "Waypoint: Pure Functions",
    "Waypoint: Currying Functions",
    "Waypoint: Functors",
    "Waypoint: Currying Functions"
  ],
  "challenges": [
    {
      "id":"cf1111c1c15feddfaeb1bdef",
      "title":"Waypoint: A Review On Objects",
      "difficulty":0,
      "description":[
        "",
        "Before we dive into Object Oriented Programming Let's take a quick look over objects in javascript"
      ],
      "tests":[
        "assert(motorBike.wheels===2, 'You should have given motorBike two wheels');",
        "assert(motorBike.engine===1, 'You should have given motorBike one engine');",
        "assert(motorBike.seats===1, 'You should have given motorBike one seat');"
      ],
      "challengeSeed":[
        "//Here is a sample Object",
        "var car = {",
        " \"wheels\":4,",
        " \"engine\":1,",
        " \"seats\":5",
        "};",
        "",
        "//Now Let's make a similar Object called motorBike",
        "//Give it two wheels, one engine and one seat",
        "var motorBike = {",
        " \"wheels\":0,",
        " \"engine\":0,",
        " \"seats\":0",
        "};",
        "",
        "(function(){return(JSON.stringify(motorBike));})();"
      ],
      "challengeType":1
    },
    {
      "id":"cf1111c1c15feddfaeb2bdef",
      "title":"Waypoint: Constructing Objects",
      "difficulty":0,
      "description":[
        "",
        "We are also able to create Objects using functions"
      ],
      "tests":[
        "assert((new Car()).wheels === 4, \"myCar.wheels should be four. Make sure that you haven't changed this value\");",
        "assert(typeof((new Car()).engine) === 'number', 'myCar.engine should be a number');",
        "assert(typeof((new Car()).seats) === 'number', 'myCar.seats should be a number');"
      ],
      "challengeSeed":[
        "//Let's add the properties engine and seats to the car in the same way that the property wheels has been added below. They should both be numbers",
        "var Car = function(){",
        " this.wheels = 4;",
        "};",
        "",
        "//Instantiated Here",
        "var myCar = new Car();",
        "",
        "(function(){return(JSON.stringify(myCar));})();"
      ],
      "challengeType":1
    },
    {
      "id":"cf1111c1c15feddfaeb3bdef",
      "title":"Waypoint: Understanding Public and Private Properties",
      "difficulty":0,
      "description":[
        "",
        "In the last challenge we use the <code>this</code> to reference public properties the current object or function.",
        "We can also create variables and functions that aren't accessible from outside the Object"
      ],
      "tests":[
        "assert(typeof(myBike.getSpeed)!=='undefined' && typeof(myBike.getSpeed) === 'function', 'The method getSpeed of myBike should be accessible outside the Object');",
        "assert(typeof(myBike.speed) === 'undefined', 'We should not been able');",
        "assert(typeof(myBike.addUnit === 'undefined'), '');"
      ],
      "challengeSeed":[
        "//Let's create an object with a two functions. One attached as a property and one not.",
        "var Car = function(){",
        "   this.gear = 1;",
        "   function addStyle(styleMe){",
        "       return('The Current Gear Is: ' + styleMe);",
        "   }",
        "   this.getGear = function(){",
        "       return(addStyle(this.gear));",
        "   };",
        "};",
        "",
        "//Make the function getSpeed of Bike publicly accessible",
        "",
        "var Bike = function(){",
        "   speed = 100;",
        "   function addUnit(value){",
        "     return(value + \"KM/H\");",
        "   }",
        "   ",
        "   getSpeed = function (){",
        "       return(addUnit(speed));",
        "   };",
        "   ",
        "};",
        "",
        "//Instantiated Here",
        "var myCar = new Car();",
        "var myBike = new Bike();",
        "",
        "if(myBike.hasOwnProperty('getSpeed')){(function(){return(JSON.stringify(myBike.getSpeed()));})();};"
      ],
      "challengeType":1
    },
    {
      "id":"cf1111c1c15feddfaeb4bdef",
      "title":"Waypoint: Instantiation",
      "difficulty":0,
      "description":[
        "",
        "Instantiation at it's most basic level is where you are creating a copy of an object from a template for use at a later time"
      ],
      "tests":[
        "assert((new Car()).wheels === 4, 'The property wheels should be four in the object constructor');",
        "assert(typeof((new Car()).engine) === 'undefined', 'There should not be a property engine in the object constructor');",
        "assert(myCar.wheels === 4, 'The property wheels of myCar should be four');",
        "assert(typeof(myCar.engine) === 'number', 'The property engine of myCar should be a number');"
      ],
      "challengeSeed":[
        "var Car = function(){",
        "   this.wheels = 4;",
        "};",
        "",
        "var myCar = new Car();",
        "",
        "//Add the property engine to myCar using dot notation and make it a number",
        "",
        "",
        "(function(){return(JSON.stringify(myCar));})();"
      ],
      "challengeType":1
    },
    {
      "id":"cf1111c1c15feddfaeb5bdef",
      "title":"Waypoint: Inheritance",
      "difficulty":0,
      "description":[
        ""
      ],
      "tests":[
        "assert(1==2, '');"
      ],
      "challengeSeed":[
        "Under Construction"
      ],
      "challengeType":1
    },
    {
      "id":"cf1111c1c15feddfaeb6bdef",
      "title":"Waypoint: Prototypical Inheritance",
      "difficulty":0,
      "description":[
        ""
      ],
      "tests":[
        "assert(1==2, '');"
      ],
      "challengeSeed":[
        "Under Construction"
      ],
      "challengeType":1
    },
    {
      "id":"cf1111c1c15feddfaeb7bdef",
      "title":"Waypoint: Using .map",
      "difficulty":0,
      "description":[
        ""
      ],
      "tests":[
        "assert(1==2, '');"
      ],
      "challengeSeed":[
        "Under Construction"
      ],
      "challengeType":1
    },
    {
      "id":"cf1111c1c15feddfaeb8bdef",
      "title":"Waypoint: Using .reduce",
      "difficulty":0,
      "description":[
        ""
      ],
      "tests":[
        "assert(1==2, '');"
      ],
      "challengeSeed":[
        "Under Construction"
      ],
      "challengeType":1
    },
    {
      "id":"cf1111c1c15feddfaeb9bdef",
      "title":"Waypoint: Using .filter",
      "difficulty":0,
      "description":[
        ""
      ],
      "tests":[
        "assert(1==2, '');"
      ],
      "challengeSeed":[
        "Under Construction"
      ],
      "challengeType":1
    },
    {
      "id":"cf1111c1c16feddfaeb1bdef",
      "title":"Waypoint: Using .sort",
      "difficulty":0,
      "description":[
        ""
      ],
      "tests":[
        "assert(1==2, '');"
      ],
      "challengeSeed":[
        "Under Construction"
      ],
      "challengeType":1
    },
    {
      "id": "cf1111c1c16feddfaeb2bdef",
      "title": "Waypoint: Using .reverse",
      "difficulty": 0,
      "description": [
        ""
      ],
      "tests": [
        "assert(1==2, '');"
      ],
      "challengeSeed": [
        "Under Construction"
      ],
      "challengeType": 1
    },
    {
      "id": "cf1111c1c16feddfaeb3bdef",
      "title": "Waypoint: Using .concat",
      "difficulty": 0,
      "description": [
        ""
      ],
      "tests": [
        "assert(1==2, '');"
      ],
      "challengeSeed": [
        "Under Construction"
      ],
      "challengeType": 1
    }
  ]
}