In this exercise, you will build a simple Grade Calculator that uses variables, functions, conditionals, loops, arrays, and objects. You will create a list of student objects, assign each a grade based on their score, and then calculate and print the average score.

 that contains at least three student objects. Each object should have two properties:

 if the score is greater than or equal to 60

 to each student object. The value of grade should be determined by the 

 array and returns the average score of all students.

Use a loop to print each student's details in the following format:

Finally, print the average score in the format:

Create an array named students using let that contains at least three student objects.

Each student object should have the properties name (a string) and score (a number).

Create a function named assignGrade(score) that returns "Pass" if the score is greater than or equal to 60, otherwise "Fail".

Loop through the students array and add a new property grade to each student object using the assignGrade function.

Create a function named calculateAverage(students) that calculates and returns the average score of all students.

Use a loop to print each student’s details in the format "<name> - Score: <score>, Grade: <grade>".

Finally, print the average score in the format "Average Score: <average>".

index.js

index.test.js

Grade Calculator

## Introduction

In this exercise, you will build a simple Grade Calculator that uses variables, functions, conditionals, loops, arrays, and objects. You will create a list of student objects, assign each a grade based on their score, and then calculate and print the average score.

---

## What you need to do

### Student Data

Create an array named **students** using **let** that contains at least three student objects. Each object should have two properties:

- **name** (a string)
- **score** (a number)

### Grade Assignment

Write a function named **assignGrade** that takes a student's **score** as its parameter and returns:

- **"Pass"** if the score is greater than or equal to 60
- **"Fail" **otherwise

### Updating Student Objects

Use a loop to iterate over the **students** array and add a new property **grade** to each student object. The value of grade should be determined by the **assignGrade** function.

### Calculating the Average

Write a function named **calculateAverage** that takes the **students** array and returns the average score of all students.

### Output

Use a loop to print each student's details in the following format:

```
<name> - Score: <score>, Grade: <grade>
```

Finally, print the average score in the format:

```
Average Score: <average>
```

---

## Let's get to it!

@exercise 4b0eaca7ef8c


- Luo taulukko nimeltä **opiskelijat**, joka sisältää vähintään kolme opiskelijaobjektia.
- Jokaisella opiskelijaobjektilla tulee olla ominaisuudet **nimi** (merkkijono) ja **pisteet** (numero).
- Luo funktio **arvioSuoritus(pisteet)** joka palauttaa "Hyväksytty", jos pistemäärä on vähintään 60, muuten "Hylätty".
- Käy läpi taulukko opiskelijat ja lisää kullekin opiskelijalle uusi ominaisuus **arvosana** käyttäen funktiota **arvioSuoritus**.
- Luo funktio **laskeKeskiarvo(opiskelijat)** joka laskee ja palauttaa opiskelijoiden pisteiden keskiarvon.
- Tulosta konsoliin jokaisen opiskelijan tiedot muodossa **"<nimi> - Pistemäärä: <pisteet>, Arvosana: <arvosana>"**.
- Tulosta lopuksi konsoliin keskiarvo muodossa **"Keskiarvo: <keskiarvo>"**.

Arvosanalaskuri

Exercise: Grade Calculator

Learn programming with JavaScript, arguably the most important and versatile programming language in today's world, at least for web development.

Welcome to Hakatemia’s beginner-friendly JavaScript course, where you will learn the fundamentals of programming with JavaScript. In today’s world, JavaScript is one of the most popular and versatile programming languages—especially in web development, where it holds a unique position: no other programming language can run both in the browser and on the server. For this reason, JavaScript has become extremely popular and is used for developing user interfaces (React, Vue, Angular, Svelte, etc.), back-end systems (NodeJS/Express, HAPI, etc.), and full-stack solutions (NextJS, NuxtJS, etc.).

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Throughout the course, you’ll learn core programming concepts such as variables, operators, conditional statements, functions, arrays, and objects. Each module is divided into small, manageable segments with plenty of practical exercises.

This course is being released as a beta—the first part of Hakatemia’s comprehensive web development curriculum—and it is the first course that uses Hakatemia’s new programming exercise environment. Please provide feedback using the button at the bottom of the page or on Discord if you encounter any issues!

Exercise: Grade Calculator

Introduction

Learn to hack — start here