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JavaScript Object-Oriented JavaScript (2015) Constructor Functions and Prototypes Adding a Prototype

Nikola Jankovic
Nikola Jankovic
10,793 Points
Posted by Nikola Jankovic
Nikola Jankovic
10,793 Points

prototype challenge in object oriented javascript

Can someone explain to me what am I doing wrong? It seems that I don't understand prototype object in javasript. This is my code in these challenge:

function Monster(name) {
  this.name = name;
  this.health = 100;
}


Monster.prototype.takeDemage = function (){
    this.health--;
  }

And these is the code from the beginning of the challenge and the task:

function Monster(name) {
  this.name = name;
  this.health = 100;
  this.takeDamage = function (){
    this.health--;
  }
}

We're adding a new method to every instance when a Monster is created. Use a prototype instead for the takeDamage method.

2 Answers

andren
andren
28,558 Points
andren
andren
28,558 Points

Your understanding of prototypes seems to be fine, the only issue with your code is that you have a typo in the name of the method. You have called it takeDemage instead of takeDamage. If you fix that typo like this:

function Monster(name) {
  this.name = name;
  this.health = 100;
}


Monster.prototype.takeDamage = function () {
    this.health--;
}

Then your code will pass.