Express Routing

Starting with App

When we write our servers we start with something like this:

'use strict'
const express = require('express');
const app = express(); 

app.get('/_endpoint_', _call-back-function_(req, resp){
resp.send('herro world');
}

app is actually an object, an express object. It also contains methods that correspond to HTTP methods. app, the object, listens for requests that match the route and methods it is assigned. When a match comes by, it runs a callback (or two, or more--it can run multiple). *Make sure to include next(); after the callback or else that function will continue to run and control will not be passed on--you're blocking the stack.

app can also use middleware as a function, and in this case would require the method .use to do so.

app HTTP methods:

Express supports the following routing methods corresponding to the HTTP methods of the same names:

checkout	copy	delete	get	head	lock
merge	mkactivity	mkcol	move	m-search	notify
options	patch	post	purge	put	report
search	subscribe	trace	unlock	unsubscribe	(all)

Sources:

ExpressJS: Routing

scotch.io: learn to use the new router