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

Now, implement the multiply method.

there is alreadyh a multiply method on here

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

  },
  divide: function(value) {

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

2 Answers

Matthew Long
Matthew Long
28,407 Points

Yes. You now have to implement it. You have to write the body of the method just like you did for the subtract method.

var calculator = {
  sum: 0,
  add: function(value) {
    this.sum += value;
  },
  subtract: function(value) {
    this.sum -= value;
  },
  multiply: function(value) {
    this.sum *= value;
  },
  divide: function(value) {
    this.sum /= value;
  },
  clear: function() {
    this.sum = 0;
  }, 
  equals: function() {
    return this.sum;
  }
}
Jennifer Nordell
seal-mask
STAFF
.a{fill-rule:evenodd;}techdegree
Jennifer Nordell
Treehouse Teacher

Hi there! Yes, there is. They simply want you to add the code that makes the method do something, which is what they mean by implement. The code will be very similar to what is already there.

Hope this helps! :sparkles: