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

Posted by ARANTXA LARIA ALBERT
ARANTXA LARIA ALBERT
7,080 Points

implement the substract method

Please I need help with this challenge. Thank you!!

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

  },
  divide: function(value) {

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

1 Answer

Steven Sullivan
Steven Sullivan
11,616 Points
Steven Sullivan
Steven Sullivan
11,616 Points

Your posting appears to be pretty vague, however let's take a look at your code:

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

Inside the codeblock we have:

this.subtract += value;

Try changing the '+=' operator to '-='

ARANTXA LARIA ALBERT
ARANTXA LARIA ALBERT
7,080 Points

Hi Steven, thanks for your answer. Howevery I already tried that and it's not working either.