Express.js tutoriallearning manual

Published on 2023-04-20 00:10:05 · 中文 · بالعربية · Español · हिंदीName · 日本語 · Русский язык · 中文繁體

Express .js tutorial

The Express .js tutorial provides basic and advanced concepts of the Express .js. Our Express .js tutorials are aimed at both beginners and professionals.
Express .js is a networking framework .js Node. It is inherently fast, robust, and asynchronous.
Our Express .js tutorials include all topics for Express .js, such as installing Express .js on Windows and Linux, request objects, response objects, get methods, post methods, cookie management, scaffolding, file uploads, templates, and more.

What is Express .js

Express is Node's fast, confident, necessary and modest web framework for .js. You can assume express as a layer built on top of the Node .js that helps manage servers and routing. It offers a powerful set of features to develop web and mobile applications.
Let's take a look at some of the core features of the Express framework:
It can be used to design single-page, multi-page, and hybrid web applications. It allows middleware to be set up to respond to HTTP requests. It defines a routing table that is used to perform different actions depending on the HTTP method and URL. It allows dynamic rendering of HTML pages based on passing parameters to the template.

Why use Express

Ultra-fast I/O Asynchronous and single-threaded MVC-like structure Powerful APIs make routing easy

How does Express look

Let's look at the basic Express .js app.
File: basic_express.js
var express = require('express');
var app = express();
app.get('/', function (req, res) {
  res.send('Welcome to lidihuo!');
});
var server = app.listen(8000, function () {
  var host = server.address().address;
  var port = server.address().port;
  console.log('Example app listening at http://%s:%s', host, port);
});
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