Review JavaScript Fundamentals by Building a Gradebook App - Step 4

JavaScript
1

Tell us what’s happening:

I don’t know why my code won’t pass can somebody 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 average = getAverage(totalScores);
  const grade = getGrade(studentScore);
  if (grade !== "F") {
    return "Class average" + average + ". Your grade" + grade + ". You passed the course.";
  }else {
    return "Class average" + " " + average + ". Your grade" + " " + grade + ". 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 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/126.0.0.0 Safari/537.36

Challenge Information:

Review JavaScript Fundamentals by Building a Gradebook App - Step 4

2

Should there be a period at the end here?

Also try using hasPassingGrdae function instead of explicitly checking for F in the if statement

3

Also check the spacing here. Confirm if the string should have a space or not. Try logging the string to check.

4

I’m lost, what? I’ve tried using a function in an if statement and it didn’t work? can you give me an example?

5

I’m not sure why you’re lost? You need to fix the spacing and punctuation in your strings. They should match exactly.

As for how to call a function inside an if, well it is simply like so:
if callThisFunction() { }

6

There… still nothing now I don’t know what else to do?

function studentMsg(totalScores, studentScore) {
  const average = getAverage(totalScores);
  const grade = getGrade(studentScore);
  let score;
  if (hasPassingGrade(score)) {
    return "Class average:" + average + ". Your grade:" + grade + ". You passed the course.";
  }else {
    return "Class average:" + average + ". Your grade:" + grade + ". You failed the course";
  }
}
console.log(studentMsg([92, 88, 12, 77, 57, 100, 67, 38, 97, 89], 37));
7

Everything seemed okay then this message appeared:

Your function call of studentMsg([56, 23, 89, 42, 75, 11, 68, 34, 91, 19], 100) should return the following message: "Class average: 50.8. Your grade: A++. You passed the course."

This is my code so far:

function studentMsg(totalScores, studentScore) {
  const average = getAverage(totalScores);
  const grade = getGrade(studentScore);
  let score;
  if (hasPassingGrade(score)) {
    return "Class average: " + average + ". Your grade: " + grade + ". You passed the course.";
  }else {
    return "Class average: " + average + ". Your grade: " + grade + ". You failed the course.";
  }

}
console.log(studentMsg([92, 88, 12, 77, 57, 100, 67, 38, 97, 89], 37));

I’m lost and confused.

8

You need to stop using the score variable as it is empty. Instead use the studentScore which was given to you in the function.

9

Thank You @hbar1st very much.

1 Like
10

This topic was automatically closed 182 days after the last reply. New replies are no longer allowed.