Review JavaScript Fundamentals by Building a Gradebook App - Step 1

JavaScript
1

Tell us what’s happening:

Just finished this. What I don’t get is why I had to write ‘i++’ in for loop when ‘i++’ adds ‘1’ to i.

Your code so far


// User Editable Region

function getAverage(scores) {
  let sum = 0;
  for(let i = 0; i < scores.length; i++){
    sum = 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]));
console.log(getAverage([38, 99, 87, 100, 100, 100, 100, 100, 100, 100]));

x

// User Editable Region

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Challenge Information:

Review JavaScript Fundamentals by Building a Gradebook App - Step 1

2

Hello @dooey95,

In the code i variable stands for index. In each iteration you want to take one element from scores array. After your operations you increase i by one to get the next element in next iteration.

If you don’t increase i, each iteration you get the same element and the loop continues infinitely.

Happy coding!