Welcome to the Treehouse Community

Want to collaborate on code errors? Have bugs you need feedback on? Looking for an extra set of eyes on your latest project? Get support with fellow developers, designers, and programmers of all backgrounds and skill levels here with the Treehouse Community! While you're at it, check out some resources Treehouse students have shared here.

Looking to learn something new?

Treehouse offers a seven day free trial for new students. Get access to thousands of hours of content and join thousands of Treehouse students and alumni in the community today.

Start your free trial

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

Posted by Martin Guzman
Martin Guzman
11,573 Points

??? object oriented challenge

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

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


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

2 Answers

Steven Parker
Steven Parker
229,670 Points
Steven Parker
Steven Parker
229,670 Points

:point_right: You just have a typo. You need takeDamage instead of takeDamge.

Martin Guzman
Martin Guzman
11,573 Points

oops !, thanks for the help

Luis Rodriguez-Ulua
Luis Rodriguez-Ulua
5,854 Points

Mines is returning a parse erro

function Monster(name) {
  this.name = name;
  this.health = 100;
  }
}
  Monster.prototype.takeDamage = function(){
    this.health--;
}
Clinton Johnson
Clinton Johnson
28,714 Points
Clinton Johnson
Clinton Johnson
28,714 Points

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