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JavaScript JavaScript Foundations Objects Prototypes

JavaScript Prototype Challenge

After the 'Car' constructor function, modify the Car's prototype to be the 'carPrototype'

<!DOCTYPE html>
<html lang="en">
    <title> JavaScript Foundations: Objects</title>
      html {
        background: #FAFAFA;
        font-family: sans-serif;
    <h1>JavaScript Foundations</h1>
    <h2>Objects: Prototypes</h2>

      var carPrototype = {
        model: "generic",
        currentGear: 0,
        increaseGear: function() {
          this.currentGear ++;
        decreaseGear: function() {

      function Car(model) {
          this.model= model; 

     car.prototype = carPrototype;


3 Answers

Jonathan Grieve
Jonathan Grieve
Treehouse Moderator 91,253 Points

Hi there,

You're almost there.

You need to reference the function name "Car" and type the following line outside of that function.


So under the final Car function with the car parameter. Hope this helps. :)

Nevermind, I figured it out and thank.

Richard Atanasov
Richard Atanasov
6,804 Points

Thank you Jonathan Grieve !! I have been really struggling to get through the last part of the course; appreciate it!