Review JavaScript Fundamentals by Building a Gradebook App - Step 4

JavaScript
1

Tell us what’s happening:

/ running tests
3. Your studentMsg function should return the correct message based on the student’s score and the class average.
// tests completed
// console output
Class average: 71.7. Your grade: F. You failed the course.
Class average: 50.8. Your grade: A++. You passed the course.

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);
  const studentGrade = getGrade(studentScore);
  const result = studentGrade === "F" ? ". You failed the course." : ". You passed the course.";

  const roundedClassAverage = Math.round(classAverage * 10) / 10;

  return `Class average: ${roundedClassAverage}. Your grade: ${studentGrade}${result}`;
}

console.log(studentMsg([92, 88, 12, 77, 57, 100, 67, 38, 97, 89], 37)); 
// Expected output: "Class average: 71.7. Your grade: F. You failed the course."

// User Editable Region


console.log(studentMsg([56, 23, 89, 42, 75, 11, 68, 34, 91, 19], 100)); 
// Expected output: "Class average: 50.8. Your grade: A++. You passed the course."

Your browser information:

User Agent is: Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/133.0.0.0 Safari/537.36

Challenge Information:

Review JavaScript Fundamentals by Building a Gradebook App - Step 4

2

why are you rounding? it was not asked