Stads Average

gradeAverage.js

var lines = document.getElementsByClassName('DataSelect'); 
var gradeCalc = {
	grades: [],
	average: -1,
	weightedSum: 0,
	ectsSum: 0
};
for(var i = 0; i < lines.length; i++){
	var children = lines[i].children;
	var grade = {};
	for(var g = 0; g < children.length; g++){
		var child = children[g];
		switch(g){
			case 0:
				grade.title = child.textContent.replace(/^\s+|\s+$/g, '');
			break;
			case 1:
				grade.date = child.textContent;
			break;
			case 2:
				grade.grade = parseInt(child.textContent);
			break;
			case 3:
				grade.ects_grade = child.textContent.replace(/^\s+|\s+$/g, '');
			break;
			case 4:
				grade.ects = parseFloat(child.textContent);
			break;
		}
	}
	if(grade.ects_grade !== "Fx" && grade.ects_grade !== ""){
		gradeCalc.weightedSum += (grade.grade * grade.ects);
		gradeCalc.ectsSum += grade.ects;
	}
	gradeCalc.grades.push(grade);
}
gradeCalc.average = Math.round((gradeCalc.weightedSum / gradeCalc.ectsSum) * 100) / 100;
document.getElementById('leftbar').innerHTML = "<p>VÆGTET GENNEMSNIT:</p><h1>"+gradeCalc.average+"</h1>";
console.log(gradeCalc);