ExpressJS

A backend framework for NodeJS backends. Used to make http endpoints.

Installation

npm install express you will see express dependency in package.json and a express folder in node-modules.

Importing

import express from 'express'

Boilerplate

const express = require('express')
const app = express()
 
app.listen(3000, () => {
    console.log("server is running");
});
 
app.get('/', (req, res) => {
    res.send("Hello From node API")
});

Concepts

• Express app
• app.use()
• ExpressJS Router()
• ExpressJS Response
• ExpressJS static()

App Anatomy

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Text Elements

index.js

index.js

routes

models

api1.route.js

api2.route.js

/

• Functions for what to do for certain requests at certain endpoints
• Exports route middleware

Frontend

Various Route js files

• Adds middleware

Models

Database

• Json object formats to follow when doing CRUD operations
• exports model middleware

Link to original