Initial commit

build/main.bundle.js

@@ -0,0 +1,30 @@
+'use strict';
+
+var calculateMonthlyPayment = function calculateMonthlyPayment(principal, years, rate) {
+    var monthlyRate = 0;
+    if (rate) {
+        monthlyRate = rate / 100 / 12;
+    }
+    var monthlyPayment = principal * monthlyRate / (1 - Math.pow(1 / (1 + monthlyRate), years * 12));
+    return { principal: principal, years: years, rate: rate, monthlyPayment: monthlyPayment, monthlyRate: monthlyRate };
+    // Creating Objects from Variables ## ES6
+    // shorted for the following ES5 syntax
+    // return { principal: principal,
+    //      years: years,
+    //      rate: rate,
+    //      monthlyPayment: monthlyPayment,
+    //      monthlyRate: monthlyRate };
+};
+
+document.getElementById('calcBtn').addEventListener('click', function () {
+    var principal = document.getElementById("principal").value;
+    var years = document.getElementById("years").value;
+    var rate = document.getElementById("rate").value;
+
+    var _calculateMonthlyPaym = calculateMonthlyPayment(principal, years, rate),
+        monthlyPayment = _calculateMonthlyPaym.monthlyPayment,
+        monthlyRate = _calculateMonthlyPaym.monthlyRate;
+
+    document.getElementById("monthlyPayment").innerHTML = monthlyPayment.toFixed(2);
+    document.getElementById("monthlyRate").innerHTML = (monthlyRate * 100).toFixed(2);
+});