ES6 classes example

loiane · loiane · commit 32e9da06442d · 2016-01-17T11:30:01.000-02:00
diff --git a/chapter01/16-ES6Classes.html b/chapter01/16-ES6Classes.html
@@ -0,0 +1,10 @@
+<!DOCTYPE html>
+<html>
+<head lang="en">
+    <meta charset="UTF-8">
+    <title></title>
+</head>
+<body>
+<script type="text/javascript" src="16-ES6Classes.js"></script>
+</body>
+</html>
diff --git a/chapter01/16-ES6Classes.js b/chapter01/16-ES6Classes.js
@@ -0,0 +1,90 @@
+// ES6 classes
+class Book {
+    constructor (title, pages, isbn) {
+        this.title = title;
+        this.pages = pages;
+        this.isbn = isbn;
+    }
+    printIsbn(){
+        console.log(this.isbn);
+    }
+}
+
+let book = new Book('title', 'pag',  'isbn');
+
+console.log(book.title); //outputs the book title
+
+book.title = 'new title'; //update the value of the book title
+
+console.log(book.title); //outputs the book title
+
+
+//inheritance
+class ITBook extends Book {
+
+    constructor (title, pages, isbn, technology) {
+        super(title, pages, isbn);
+        this.technology = technology;
+    }
+
+    printTechnology(){
+        console.log(this.technology);
+    }
+}
+
+let jsBook = new ITBook('Learning JS Algorithms', '200', '1234567890', 'JavaScript');
+
+console.log(jsBook.title);
+console.log(jsBook.printTechnology());
+
+//getter and setters
+class Person {
+
+    constructor (name) {
+        this._name = name;
+    }
+
+    get name() {
+        return this._name;
+    }
+
+    set name(value) {
+        this._name = value;
+    }
+}
+
+let lotrChar = new Person('Frodo');
+console.log(lotrChar.name);
+lotrChar.name = 'Gandalf';
+console.log(lotrChar.name);
+
+lotrChar._name = 'Sam';
+console.log(lotrChar.name);
+
+
+//using symbols for private atributes
+
+var _name = Symbol();
+class Person2 {
+
+    constructor (name) {
+        this[_name] = name;
+    }
+
+    get name() {
+        return this[_name];
+    }
+
+    set name(value) {
+        this[_name] = value;
+    }
+}
+
+let lotrChar2 = new Person2('Frodo');
+console.log(lotrChar2.name);
+lotrChar2.name = 'Gandalf';
+console.log(lotrChar2.name);
+
+console.log(Object.getOwnPropertySymbols(lotrChar2));
+
+//http://davidvujic.blogspot.com.br/2015/03/what-wait-really-oh-no-a-post-about-es6-classes-and-privacy.html
