Build a Gradebook App - Build a Gradebook App

JavaScript
1

Tell us what’s happening:

I’ve completed all exercises except for seventeen and twenty two most of them meet the requirements but not returning the grade as “F” for example seventeen. And twenty two does not meet the correct message based on the student score or class averages.

Your code so far

function getAverage(scores) {
  // Sum the scores and compute the average, rounded to one decimal place.
  const total = scores.reduce((acc, score) => acc + score, 0);
  return parseFloat((total / scores.length).toFixed(1));
}

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(grade) {
  // Return false if the grade is "F", true otherwise.
  return grade !== "F";
}

function studentMsg(scores, studentScore) {
  // Compute the class average and determine the student's grade.
  const average = getAverage(scores);
  const grade = getGrade(studentScore);
  const result = hasPassingGrade(grade) ? "passed" : "failed";
  return `Class average: ${average}. Your grade: ${grade}. You ${result} the course.`;
}

// For demonstration, here are the test cases:

console.log(getAverage([92, 88, 12, 77, 57, 100, 67, 38, 97, 89])); 
// Expected output: 71.7

console.log(getAverage([45, 87, 98, 100, 86, 94, 67, 88, 94, 95])); 
// Expected output: 85.4

console.log(getAverage([38, 99, 87, 100, 100, 100, 100, 100, 100, 100])); 
// Expected output: 92.4

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."

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 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/136.0.0.0 Safari/537.36 Edg/136.0.0.0

Challenge Information:

Build a Gradebook App - Build a Gradebook App

2

What is the expected output? What is your output?

Have you tried any tests or using console.log() to reveal the content of certain variables to troubleshoot?

3

Here is the expected outcome // running tests 17. Your

hasPassingGrade

function should return

false

if the grade is an

"F"

. 22. Your

studentMsg

function should return the correct message based on the student’s score and the class average. // tests completed // console output 71.7 85.4 92.4 Class average: 71.7. Your grade: F. You failed the course. Class average: 50.8. Your grade: A+. You passed the course

4

And when you test it what does your function return?

5

read again the description of the function, you are missing something