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

David Curran
David Curran
7,682 Points
Posted by 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
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
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.