JSFiddle - React, Tailwind, and code Playground

by igalst

JavaScript

function Student(firstName, lastName, ex1, ex2, ex3, ex4) {
    this.firstName = firstName;
    this.lastName = lastName;
    this.ex1 = ex1;
    this.ex2 = ex2;
    this.ex3 = ex3;
    this.ex4 = ex4;
}

var students = [
//          First Name  Last Name  Exam1  Exam2  Exam3  Exam4
new Student("Yossi", "Levi", 90, 80, 40, 55),
new Student("David", "Israeli", 80, 49, 85, 62),
new Student("Chen", "Shalom", 90, 91, 100, 105),
new Student("Oren", "Cohen", 50, 67, 51, 20)];

function listAllStudentsWithAverageGrade(i) {
    for (var i = 0; i < students.length; i++) {
        var exSum = students[i].ex1 + students[i].ex2 + students[i].ex3 + students[i].ex4;
        var avg = exSum / 4;
        console.log(students[i].firstName + " " + students[i].lastName + ". AVG is : " + avg);
    }

}


// 1: Example of one record: Yossi Levi, 70 avg.
listAllStudentsWithAverageGrade(0);



// 2: Calculate class average and print on screen rounded up to 1 decimal number (e.g: 84.3);
function studentAvg(i) {
    return (students[i].ex1 + students[i].ex2 + students[i].ex3 + students[i].ex4) / 4;
}

function classAverage(students) {
    var sum = 0;
    for (var i = 0; i < students.length; i++) {
        sum += studentAvg(i);
    }
    return (Math.round(sum / students.length) * 10) / 10;
}

var classAvg = classAverage(students);

console.log("class avg is " + classAvg);



// 3a: What is classes' best student's name?
function getBestStudentName(students) {
    var bestAvg = 0;
    var name;
    
    for (var i = 0; i < students.length; i++) {
        if (studentAvg(i) >bestAvg) {
            bestAvg = studentAvg(i);
            name = students[i].firstName;
        }
    }
    return name;
}


var bestStudentName = getBestStudentName(students);
console.log("Best Student Name: " + bestStudentName);

// 3b*: Who is the best student?

function getBestStudent(students) {
    var bestAvg = 0;
    var student;
    
    for (var i = 0; i < students.length; i++) {
        if (studentAvg(i)...