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JavaScript JavaScript Foundations Objects Prototypes

Dan Neumann
PLUS
Dan Neumann
Courses Plus Student 10,318 Points
Posted by Dan Neumann
Dan Neumann
Courses Plus Student 10,318 Points

Javascript Foundations 3rd Challenge task

In the prototype section in the 3rd challenge task, I put:

function Car(model) { carPrototype.model = model; }

  Car.prototype = carPrototype;

  Car.prototype.wheels = "4";

and it returned Car.prototype.wheels was undefined not "4". Any ideas as to what I did wrong?

3 Answers

Hugo Paz
Hugo Paz
15,622 Points
Hugo Paz
Hugo Paz
15,622 Points

carPrototype.wheels = 4;

Andrew Shook
Andrew Shook
31,709 Points
Andrew Shook
Andrew Shook
31,709 Points

Yes, the problem is that you are using the old car prototype and not the one you established in step two of the challenge. Also, you need to set the number of wheel to a number and not a string. Hope this helps, if you need more of an explanation just let me know