NodeJS Snippets

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Handling file uploads with 'multer'

This snippet explains how to handle file uploads through forms using the 'multer' npm package.

Allow Express to serve static files

This code snippet goes over the setup required to serve static files within an Express app

Accessing form data in an Express app

This snippet explains how to set up an Express application to parse and read form data after submission through the 'body-parser' npm package

Defining a Content Security Policy (CSP) for your website using Express

This code snippet shows how you can implement a Content Security Policy for your website from within your Express.js web application as a part of web security

Encrypting a MongoDB database

This snippet shows how to encrypt a MongoDB database accessed through the 'mongoose' package with 'mongoose-encryption'

Hashing in Node.js

This snippet explain how to algorithmically hash a string using the SHA512 hashing algorithm provided by the 'hash.js' npm package. This is specially useful (and necessary) when working with passwords.

Defining request handlers with Express

This code snippet shows how to define a request handler using the 'express' package

Setting cookies with Express

This code snippet explains how to set a cookie from the Back End using the reponse object provided by Node.js and the 'express' npm package

Connecting to a MongoDB database

This snippet goes over how to establish a connection with a MongoDB database, whether it's a local implementation or a MongoDB Atlas cluster

Using templating engines

This snippet shows how to integrate a templating engine into an Express web app.

Running JS files within a module's execution

This snippet explains how to run JavaScript files from the inside of one module during said module's execution.

Reading cookies in an Express app

This snippet explains how to access properties inside the native req.cookies object with 'cookie-parser'

Use cookies in an Express app

This code snippet shows how to make cookies available and accesible to your express web app using 'cookie-parser' through the native req.cookies object.

Creating an Express app

This code snippet shows how to create an instance of a web app with the 'express' npm package that listens continuously to HTTP requests

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