function getRandomInt(min, max) {
    min = Math.ceil(min);
    max = Math.floor(max);
    return Math.floor(Math.random() * (max - min) + min); //The maximum is exclusive and the minimum is inclusive
};

function getRndNum(min, max) {
    let x = Math.random() * (max - min) + min;
    return x.toPrecision(getRandomInt(2,5));
};

var letter_grades = document.getElementsByClassName("mark");
var percentages = document.getElementsByClassName("score");
var missing_assignments = document.getElementsByClassName("class-item-lessemphasis hide-for-print");

for (var i = 0; i < letter_grades.length; i++) { // there _should_ be as many marks as there are scores, so this works
    missing_assignments.item(i).childNodes[1].innerText = "0 Missing Assignments";
    var new_percentage = getRndNum(80, 100);
    console.log(letter_grades.item(i).childNodes[0].data);
    percentages.item(i).childNodes[0].data = new_percentage.toString() + "%";
    if (new_percentage < 83) {
        letter_grades.item(i).childNodes[0].data = "B-";
    }
    else if (new_percentage < 87){
        letter_grades.item(i).childNodes[0].data = "B";
    }
    else if (new_percentage < 90){
        letter_grades.item(i).childNodes[0].data = "B+";
    }
    else if (new_percentage < 93){
        letter_grades.item(i).childNodes[0].data = "A-";
    }
    else if (new_percentage < 98){
        letter_grades.item(i).childNodes[0].data = "A";
    }
    else if (new_percentage >= 98) {
        letter_grades.item(i).childNodes[0].data = "A+";
    }
};