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JavaScript

Posted by David Trejo
David Trejo
19,914 Points

Tallying Up Score from Arrays

Hello everyone,

I am trying to write a program, where an array is equal to 0,1, and 2 points. The the result that I should be getting is 6. Can anyone point me in the right direction in what I am doing wrong in my function. I appreciate the help.

var zero = [1,2,3,5,7]; // 0
var one = [0,4,6,9]; // 1
var two = 8; //2

var NUMBERS = zero.concat(one,two);


function calculate(){
  var TOTAL = 0; // 6

for(var i = 0; i < NUMBERS.length; i++){

   if(NUMBERS[i] === one[i]){

        TOTAL += 1;

    }else if(NUMBERS[i] == two){
        TOTAL +=2;
    }

  }

}

calculate();

1 Answer

Steven Parker
Steven Parker
243,656 Points
Steven Parker
Steven Parker
243,656 Points

One problem is that this line is incomplete:

for(var i = 0; i

You need to have an evaluation followed by an increment, plus a closing parenthesis and an opening brace. But assuming the loop was meant to step through each element of NUMBER, you'd still have these issues:

  • you will run out of values in one to compare against in the first if
  • the second if will only match on the last value
  • the total will be 2

I'm not sure why you are expecting a result of 6, unless the missing part of the for does something very unexpected.