Git Product home page Git Product logo

fewpjs-oo-reviewing-javascript-inheritance-quiz-recoded-istanbul-2019's Introduction

Quiz: Reviewing JavaScript Inheritance

???

Reviewing JavaScript Inheritance

?:

class Animal {
  constructor(name) {
    this.name = name;
  }
  eats() {
    return `${this.name} is eating!`
  }
}
class Mammal {
  constructor(name) {
    this.name = name;
  }
  sleeps() {
    return `${this.name} is sleeping!`
  }
}
class Rabbit extends Mammal {
  //...
} 
let animal = new Animal("Ringo");
let mammal = new Mammal("Wilbur");
let rabbit = new Rabbit("Jabby");

Which function will not output โ€œ[Name] is eating!โ€

( ) None of the above (X) mammal.eats() ( ) animal.eats() ( ) rabbit.eats()

?: The accepted functionality of extend is to build new functionality into the inherited method:

( ) True (X) False

?:

class Animal {
  constructor(name) {
    this.name = name;
  }
  eats() {
    return `${this.name} is eating!`
  }
}
class Rabbit extends Mammal {
  constructor(name, color) {
    //..
  }
}

What is the correct way to have the constructor for rabbit inherit the name property?

( ) this.name = name; (X) super(name); ( ) this.name = super(name); ( ) super(name) = name;

?: What keyword does JavaScript provide for directly working with a parent class constructor and inherited methods?

(X) super ( ) extends ( ) class ( ) constructor

?: What is the correct way to have the constructor for rabbit inherit the name property?

( ) this.name = name; ( ) this.name = super(name); (X) super(name); ( ) super(name) = name;

?:

class Vehicle {
  constructor( make ) {
    this._make = make
  }

  get make() {
    return this._make
  }

 static definition() {
    return 'A vehicle is used for transporting people or goods, especially on land.'
  }
}

class Car extends Vehicle {
  constructor( make , driveTrain ) {
    super( make )
    this._driveTrain = driveTrain
  }

  static definition() {
    return `${super.definition()} A car is a road vehicle, typically with four wheels, powered by an internal combustion engine and able to carry a small number of people.`
  }
}

What is the correct way to have the car utilize the inherited static method of definition?

( ) ${definition()} a road vehicle, typically with four wheels, powered by an internal combustion engine and able to carry a small number of people. ( ) ${this.definition()} a road vehicle, typically with four wheels, powered by an internal combustion engine and able to carry a small number of people. ( ) ${super.definition()} + a road vehicle, typically with four wheels, powered by an internal combustion engine and able to carry a small number of people. (X) ${super.definition()} a road vehicle, typically with four wheels, powered by an internal combustion engine and able to carry a small number of people.

???

fewpjs-oo-reviewing-javascript-inheritance-quiz-recoded-istanbul-2019's People

Contributors

drakeltheryuujin avatar

Watchers

James Cloos avatar Alex Griffith avatar  avatar

Recommend Projects

  • React photo React

    A declarative, efficient, and flexible JavaScript library for building user interfaces.

  • Vue.js photo Vue.js

    ๐Ÿ–– Vue.js is a progressive, incrementally-adoptable JavaScript framework for building UI on the web.

  • Typescript photo Typescript

    TypeScript is a superset of JavaScript that compiles to clean JavaScript output.

  • TensorFlow photo TensorFlow

    An Open Source Machine Learning Framework for Everyone

  • Django photo Django

    The Web framework for perfectionists with deadlines.

  • D3 photo D3

    Bring data to life with SVG, Canvas and HTML. ๐Ÿ“Š๐Ÿ“ˆ๐ŸŽ‰

Recommend Topics

  • javascript

    JavaScript (JS) is a lightweight interpreted programming language with first-class functions.

  • web

    Some thing interesting about web. New door for the world.

  • server

    A server is a program made to process requests and deliver data to clients.

  • Machine learning

    Machine learning is a way of modeling and interpreting data that allows a piece of software to respond intelligently.

  • Game

    Some thing interesting about game, make everyone happy.

Recommend Org

  • Facebook photo Facebook

    We are working to build community through open source technology. NB: members must have two-factor auth.

  • Microsoft photo Microsoft

    Open source projects and samples from Microsoft.

  • Google photo Google

    Google โค๏ธ Open Source for everyone.

  • D3 photo D3

    Data-Driven Documents codes.