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

David Curran
David Curran
7,682 Points

Javascript prototyping

The exercise will not pass. It wants me to change the function to a prototype function:

original code:

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

My code:

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

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

Can anyone point me in the right direction

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

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

2 Answers

Rune Andreas Nielsen
Rune Andreas Nielsen
5,354 Points

Hi, David.

The problem is that using prototypes, your prototype reference should point to a function like the code below and not try to be a function.

Monster.prototype.takeDamage = function() {
   this.health--;
}
David Curran
David Curran
7,682 Points

Thank you very much Rune Andreas Nielsen. I understand what you mean. I have passed that section now. Thanks again.