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@zcaceres
zcaceres / Revealing-Module-Pattern.md
Last active February 1, 2024 21:40
Using the Revealing Module Pattern in Javascript

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.

Using Function Scope to Create Public and Private Methods

@TotallyInformation
TotallyInformation / Capture.PNG
Last active February 29, 2016 08:45
Post data to InfluxDB
Capture.PNG
@natcl
natcl / nodered.conf
Last active April 1, 2018 07:22
Node-red startup file for Synology (/etc/init)
# only start this service after the httpd user process has started
#start on syno.network.ready
start on runlevel 2
# stop the service gracefully if the runlevel changes to 'reboot'
stop on runlevel [06]
# run the scripts as the 'admin' user. Running as root (the default) is a bad idea.
setuid admin
# This script work on any system using systemd as the init process.
# It works on Debian/Raspbian Jessie.
# If you have Debian/Rapbian Wheezy and want to use this script with systemd
# follow the information here : https://wiki.debian.org/systemd
# To easily download, install and set at startup:
# wget -O /tmp/download https://gist.github.com/Belphemur/3f6d3bf211b0e8a18d93/download && sudo tar -zxf /tmp/download --strip-components 1 -C /etc/systemd/system/ && sudo systemctl --reload-daemon && sudo systemctl enable Node-RED
# To consult the log : journalctl -u Node-RED
[Unit]
@subudeepak
subudeepak / WebSockets.md
Last active November 2, 2022 00:04
The problems and some security implications of websockets - Cross-site WebSockets Scripting (XSWS)

WebSockets - An Introduction

WebSockets is a modern HTML5 standard which makes communication between client and server a lot more simpler than ever. We are all familiar with the technology of sockets. Sockets have been fundamental to network communication for a long time but usually the communication over the browser has been restricted. The general restrictions

  • The server used to have a permanent listener while the client (aka browser) was not designated any fixed listener for a more long term connection. Hence, every communication was restricted to the client demanding and the server responding.
  • This meant that unless the client requested for a particular resource, the server was unable to push such a resource to the client.
  • This was detrimental since the client is then forced to check with the server at regular intervals. This meant a lot of libraries focused on optimizing asynchronous calls and identifying the response of asynchronous calls. Notably t
@cdhunt
cdhunt / Get-CredentialFromWindowsCredentialManager.ps1
Last active June 1, 2023 23:48 — forked from toburger/Get-CredentialFromWindowsCredentialManager.ps1
Gets a PowerShell Credential [PSCredential] from the Windows Credential Manager. This only works for Generic Credentials.
<#
.SYNOPSIS
Gets a PowerShell Credential (PSCredential) from the Windows Credential Manager
.DESCRIPTION
This module will return a [PSCredential] object from a credential stored in Windows Credential Manager. The
Get-StoredCredential function can only access Generic Credentials.
Alias: GSC
@xtian
xtian / html5boilerplate.jade
Last active December 23, 2023 15:05
HTML5 Boilerplate in jade
!!! 5
html(class='no-js')
head
meta(charset='utf-8')
meta(http-equiv='X-UA-Compatible', content='IE=edge')
title
meta(name='description', content='')
meta(name='viewport', content='width=device-width, initial-scale=1')
@ryanflorence
ryanflorence / static_server.js
Last active March 13, 2024 08:05
Node.JS static file web server. Put it in your path to fire up servers in any directory, takes an optional port argument.
var http = require("http"),
url = require("url"),
path = require("path"),
fs = require("fs")
port = process.argv[2] || 8888;
http.createServer(function(request, response) {
var uri = url.parse(request.url).pathname
, filename = path.join(process.cwd(), uri);