Review JavaScript Fundamentals by Building a Gradebook App - Step 4

JavaScript
1

Tell us what’s happening:

I have tried multiple different varieties of solving step 4 of building a gradebook app. I’m not sure what else I could try. Please help!

Your code so far

function getAverage(scores) {
  let sum = 0;

  for (const score of scores) {
    sum += score;
  }

  return sum / scores.length;
}

function getGrade(score) {
  if (score === 100) {
    return "A++";
  } else if (score >= 90) {
    return "A";
  } else if (score >= 80) {
    return "B";
  } else if (score >= 70) {
    return "C";
  } else if (score >= 60) {
    return "D";
  } else {
    return "F";
  }
}

function hasPassingGrade(score) {
  return getGrade(score) !== "F";
}


// User Editable Region

function studentMsg(totalScores, studentScore) {
  const classAverage = getAverage(totalScores).toFixed(1); // Round to one decimal place
  const studentGrade = getGrade(studentScore);
  const passed = hasPassingGrade(studentScore); // Call hasPassingGrade with studentScore

  if (passed) {
    return `Class average: ${classAverage}. Your grade: ${studentGrade}. You passed the course.`;
  } else {
    return `Class average: ${classAverage}. Your grade: ${studentGrade}. You failed the course.`;
  }
}
console.log(studentMsg([92, 88, 12, 77, 57, 100, 67, 38, 97, 89], 37));


// User Editable Region

Your browser information:

User Agent is: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/125.0.0.0 Safari/537.36

Challenge Information:

Review JavaScript Fundamentals by Building a Gradebook App - Step 4

2

Why did you use toFixed here?

The challenge didn’t ask for a specific number of digits after the decimal point.

If you tried it with: [33, 44, 55, 66, 77, 88, 99, 100], 92

Your output:
Class average: 70.3. Your grade: A. You passed the course.

The desired output:
Class average: 70.25. Your grade: A. You passed the course.

2 Likes
3

I’ll be honest, I plugged in my original code into chatGPT to figure out why I wasn’t passing and it got added to my code. I was trying anything and everything to try to make the code pass.

4

Taking out the toFixed(1) fixed the code and now i feel silly. Thank you!

2 Likes
5

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