Welcome to the Treehouse Community

The Treehouse Community is a meeting place for developers, designers, and programmers of all backgrounds and skill levels to get support. Collaborate here on code errors or bugs that you need feedback on, or asking for an extra set of eyes on your latest project. Join thousands of Treehouse students and alumni in the community today. (Note: Only Treehouse students can comment or ask questions, but non-students are welcome to browse our conversations.)

Looking to learn something new?

Treehouse offers a seven day free trial for new students. Get access to thousands of hours of content and a supportive community. Start your free trial today.

JavaScript Object-Oriented JavaScript (2015) Introduction to Methods Finishing the Calculator

HELP... HELP.. HELP WHAT DO I NEED TO DO!!!

people on treehouse are telling what to do, but i still cant get it. whats the answer please. what do I need to type in. I watched the video and everything. its no help

calculator.js
var calculator = {
  sum: 0,
  add: function(value) {
    this.sum += value;
  },
  subtract: function(value) {

  },
  multiply: function(value) {

  },
  divide: function(value) {

  },
  clear: function() {
    this.sum = 0;
  }, 
  equals: function() {
    return this.sum;
  }
}

3 Answers

Zachary Billingsley
Zachary Billingsley
6,187 Points

Hello!

To finish the calculator you need to write the functions for each of the other operations.

Use the syntax from the addition function and complete with the different operators.

ex:

 subtract: function(value) {
     this.sum -= value;
  },

Hope that helps!

Cindy Lea
PLUS
Cindy Lea
Courses Plus Student 6,485 Points

Here is part of it, you need to finish it one more....You can do it!

var calculator = { sum: 0, add: function(value) { this.sum += value; }, subtract: function(value) { this.subtract -= value; }, multiply: function(value) { this.multiply *= value; }, divide: function(value) { FINISH THIS }, clear: function() { this.sum = 0; }, equals: function() { return this.sum; } }

Thank you very much. this helped a lot. I passed.