Review JavaScript Fundamentals by Building a Gradebook App - Step 1

JavaScript
1

Tell us what’s happening:

I could use some help here please. I’m sure I’m on the right track.

Your code so far


// User Editable Region

function getAverage(scores) {
  let sum = 0;
  for (let i = 0; i <= scores.length; i++) {
    sum += scores[i];
  }
  return sum / scores.length;
}

console.log(getAverage([92, 88, 12, 77, 57, 100, 67, 38, 97, 89]));
console.log(getAverage([45, 87, 98, 100, 86, 94, 67, 88, 94, 95]));

// User Editable Region

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Challenge Information:

Review JavaScript Fundamentals by Building a Gradebook App - Step 1

2

Try checking what’s being added to the sum at each step. For example with console.log(scores[i])

3

I’m adding each score in the array to sum in order to get the sum total of all the scores.
Sorry I don’t think that is where the problem is.

4

Have you checked it?

5

Yes here’s my new code with checks:
function getAverage(scores) {
let sum = 0;
for (let i = 0; i <= scores.length; i++) {
sum += scores[i];
console.log(scores[i])
}
console.log(scores.length)
let average = sum / scores.length;
console.log(average);
return average;
}

console.log(getAverage([92, 88, 12, 77, 57, 100, 67, 38, 97, 89]));
console.log(getAverage([45, 87, 98, 100, 86, 94, 67, 88, 94, 95]));

6

aren’t you noticing one thing that is not a number from here?