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

Posted by samantha pinnock
samantha pinnock
12,292 Points

helpppp

Implement the subtract method.

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;
    this.sum -= value;
  }
}

1 Answer

Steven Parker
Steven Parker
231,268 Points
Steven Parker
Steven Parker
231,268 Points

This might be easier than you think.

Take a look at the add method that has already been implemented. What the subtract method needs is very much like what is in the add method, but of course instead of adding (+) it will subtract ("-").

I'll bet you can do it now without an explicit spoiler.