created mortgage2 for understanding ES6 class

build/main.bundle.js

@@ -63,7 +63,7 @@
 /******/ 	__webpack_require__.p = "";
 /******/
 /******/ 	// Load entry module and return exports
-/******/ 	return __webpack_require__(__webpack_require__.s = 0);
+/******/ 	return __webpack_require__(__webpack_require__.s = 1);
 /******/ })
 /************************************************************************/
 /******/ ([
@@ -73,6 +73,10 @@
 "use strict";
 
 
+Object.defineProperty(exports, "__esModule", {
+  value: true
+});
+
 var _createClass = function () { function defineProperties(target, props) { for (var i = 0; i < props.length; i++) { var descriptor = props[i]; descriptor.enumerable = descriptor.enumerable || false; descriptor.configurable = true; if ("value" in descriptor) descriptor.writable = true; Object.defineProperty(target, descriptor.key, descriptor); } } return function (Constructor, protoProps, staticProps) { if (protoProps) defineProperties(Constructor.prototype, protoProps); if (staticProps) defineProperties(Constructor, staticProps); return Constructor; }; }();
 
 function _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError("Cannot call a class as a function"); } }
@@ -87,13 +91,13 @@ var Mortgage = function () {
   }
 
   _createClass(Mortgage, [{
-    key: 'monthlyPayment',
+    key: "monthlyPayment",
     get: function get() {
       var monthlyRate = this.rate / 100 / 12;
       return this.principal * monthlyRate / (1 - Math.pow(1 / (1 + monthlyRate), this.years * 12));
     }
   }, {
-    key: 'amortization',
+    key: "amortization",
     get: function get() {
       var monthlyPayment = this.monthlyPayment;
       var monthlyRate = this.rate / 100 / 12;
@@ -118,11 +122,26 @@ var Mortgage = function () {
   return Mortgage;
 }();
 
+exports.default = Mortgage;
+
+/***/ }),
+/* 1 */
+/***/ (function(module, exports, __webpack_require__) {
+
+"use strict";
+
+
+var _mortgage = __webpack_require__(0);
+
+var _mortgage2 = _interopRequireDefault(_mortgage);
+
+function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }
+
 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 mortgage = new Mortgage(principal, years, rate);
+    var mortgage = new _mortgage2.default(principal, years, rate);
     document.getElementById("monthlyPayment").innerHTML = mortgage.monthlyPayment.toFixed(2);
     document.getElementById("monthlyRate").innerHTML = (rate / 12).toFixed(2);
     var html = "";

js/main.js

@@ -1,38 +1,4 @@
-class Mortgage {
+import Mortgage from './mortgage2';
-  constructor(principal, years, rate) {
-    this.principal = principal;
-    this.years = years;
-    this.rate = rate;
-  }
-
-  get monthlyPayment() {
-    let monthlyRate = this.rate / 100 / 12;
-    return this.principal * monthlyRate / (1 - (Math.pow(1/(1 + monthlyRate),
-                    this.years * 12)));
-  }
-
-  get amortization() {
-    let monthlyPayment = this.monthlyPayment;
-    let monthlyRate = this.rate / 100 / 12;
-    let balance = this.principal;
-    let amortization = [];
-    for (let y=0; y<this.years; y++) {
-        let interestY = 0;
-        let principalY = 0;
-      for (let m=0; m<12; m++) {
-              let interestM = balance * monthlyRate;
-              let principalM = monthlyPayment - interestM;
-              interestY = interestY + interestM;
-              principalY = principalY + principalM;
-              balance = balance - principalM;
-      }
-      amortization.push({principalY, interestY, balance});
-    }
-    return amortization;
-  }
-}
-
-
 
 document.getElementById('calcBtn').addEventListener('click', () => {
     let principal = document.getElementById("principal").value;

js/mortgage2.js

@@ -0,0 +1,33 @@
+export default class Mortgage {
+  constructor(principal, years, rate) {
+    this.principal = principal;
+    this.years = years;
+    this.rate = rate;
+  }
+
+  get monthlyPayment() {
+    let monthlyRate = this.rate / 100 / 12;
+    return this.principal * monthlyRate / (1 - (Math.pow(1/(1 + monthlyRate),
+                    this.years * 12)));
+  }
+
+  get amortization() {
+    let monthlyPayment = this.monthlyPayment;
+    let monthlyRate = this.rate / 100 / 12;
+    let balance = this.principal;
+    let amortization = [];
+    for (let y=0; y<this.years; y++) {
+        let interestY = 0;
+        let principalY = 0;
+      for (let m=0; m<12; m++) {
+              let interestM = balance * monthlyRate;
+              let principalM = monthlyPayment - interestM;
+              interestY = interestY + interestM;
+              principalY = principalY + principalM;
+              balance = balance - principalM;
+      }
+      amortization.push({principalY, interestY, balance});
+    }
+    return amortization;
+  }
+}