Murking Honchrows RagingLeviathan

The Revealing Module Pattern in Javascript

Zach Caceres

Javascript does not have the typical 'private' and 'public' specifiers of more traditional object oriented languages like C# or Java. However, you can achieve the same effect through the clever application of Javascript's function-level scoping. The Revealing Module pattern is a design pattern for Javascript applications that elegantly solves this problem.

The central principle of the Revealing Module pattern is that all functionality and variables should be hidden unless deliberately exposed.

Let's imagine we have a music application where a musicPlayer.js file handles much of our user's experience. We need to access some methods, but shouldn't be able to mess with other methods or variables.

	<?php
	ini_set('display_errors', 1);
	ini_set('display_startup_errors', 1);
	ini_set('max_execution_time', 300); //300 seconds = 5 minutes. In case if your CURL is slow and is loading too much (Can be IPv6 problem)

	error_reporting(E_ALL);

	define('OAUTH2_CLIENT_ID', '1234567890');
	define('OAUTH2_CLIENT_SECRET', 'verysecretclientcode');

	<?php

	class authentication {

	public function login($username, $password) {
	$decrypted = $this->decrypt($password);
	if($this->valid_password($username, $decrypted)) {
	return true;
	}
	return false;

	<?php
	$category = 8;
	$data = array(
	164, 150, 132, 144, 125, 149, 145, 146,
	158, 140, 147, 136, 148, 152, 144, 168,
	126, 138, 176, 163, 119, 154, 165, 146,
	173, 142, 147, 135, 153, 140, 135, 161,
	145, 135, 142, 150, 156, 145, 128, 157
	);
	$min = min($data);

	<?php
	/*
	$tempx = $this->TranAktivitasKuliahMahasiswa->query("SELECT TranAktivitasKuliahMahasiswa.id, TranAktivitasKuliahMahasiswa.kode_kuliah_mahasiswa, TmstMahasiswa.nim, TmstMahasiswa.nama_mahasiswa
	FROM tran_aktivitas_kuliah_mahasiswa AS TranAktivitasKuliahMahasiswa, tmst_mahasiswa AS TmstMahasiswa
	WHERE TmstMahasiswa.id = TranAktivitasKuliahMahasiswa.tmst_mahasiswa_id AND TmstMahasiswa.tmst_program_studi_id = 2 or TmstMahasiswa.nim LIKE '%D42108%'", false);
	*/
	/*
	$tempx = $this->TranAktivitasKuliahMahasiswa->query('SELECT TranAktivitasKuliahMahasiswa.id, TmstMahasiswa.nim, TmstMahasiswa.nama_mahasiswa
	FROM tran_aktivitas_kuliah_mahasiswa AS TranAktivitasKuliahMahasiswa, tmst_mahasiswa AS TmstMahasiswa
	WHERE TmstMahasiswa.id = TranAktivitasKuliahMahasiswa.tmst_mahasiswa_id AND TmstMahasiswa.tmst_program_studi_id = 58', false);

Murking Honchrows RagingLeviathan

The Revealing Module Pattern in Javascript

Using Function Scope to Create Public and Private Methods