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10_Classes_and_OOP/myClasses.js

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+// ES6
+
+class User {
+    constructor(username, email, password){
+        this.username = username;
+        this.email = email;
+        this.password = password
+    }
+
+    encryptPassword(){
+        return `${this.password}abc`
+    }
+    changeUsername(){
+        return `${this.username.toUpperCase()}`
+    }
+
+}
+
+const chai = new User("chai", "chai@gmail.com", "123")
+
+console.log(chai.encryptPassword());
+console.log(chai.changeUsername());
+
+// behind the scene
+
+function User(username, email, password){
+    this.username = username;
+    this.email = email;
+    this.password = password
+}
+
+User.prototype.encryptPassword = function(){
+    return `${this.password}abc`
+}
+User.prototype.changeUsername = function(){
+    return `${this.username.toUpperCase()}`
+}
+
+
+const tea = new User("tea", "tea@gmail.com", "123")
+
+console.log(tea.encryptPassword());
+console.log(tea.changeUsername());