To view the examples, clone the Express repo and install the dependencies: This is where we'll write our code. Installieren Sie dann express als Abhängigkeit, wie im Installationshandbuch beschrieben. Let's start with the very basic structure. Express is a node.js web development framework which comes with various features you require to build end-to-end web application such as routing, parsing, render engine support, etc. Express.js Web Application. By default, the … Express ist ein einfaches und flexibles Node.js-Framework von Webanwendungen, das zahlreiche leistungsfähige Features und Funktionen für Webanwendungen und mobile Anwendungen bereitstellt. The second installs express. '); }); app.listen(3000, function () { console.log('Example app listening on port 3000! In this Node.js tutorial for beginners, we are going to cover the following topics: Node.js Basic Concepts Examples. APIs Mithilfe unzähliger HTTP-Dienstprogrammmethoden und Middlewarefunktionen gestaltet sich das Erstellen einer leistungsfähigen API schnell und einfach. '); In this section, you will learn how to create a web application using Express.js. Now that we installed express.js globally, we will build a web application using Express.js.
With support for over 14 template engines via Consolidate.js, you can quickly craft your perfect framework. The first line creates the package.json file, it basically initiates the project. express.static(root, [options]) La única función de middleware incorporado en Express es express.static.
Create a folder name EXPRESS_WEBSERVER, navigate into the folder using command prompt and run the following command. Express.js Web Application Example. This tutorial is for Node.js and Express Beginners. Note, the --save flag simply adds express to the packages file so that if we need to reinstall the packages again, package.json knows/remembers which packages the project needs . Erstellen Sie im Verzeichnis myapp eine Datei namens app.js und fügen Sie den folgenden Code hinzu: var express = require('express'); var app = express(); app.get('/', function (req, res) { res.send('Hello World! Now create a server.js file. Our Express.js tutorial includes all topics of Express.js such as Express.js installation on windows and linux, request object, response object, get method, post method, cookie management, scaffolding, file upload, template etc. El argumento root especifica el directorio raíz desde el que se realiza el servicio de activos estáticos. Web Server. It is a fast, robust and asynchronous in nature. Express.js provides an easy way to create web server and render HTML pages for different HTTP requests by configuring routes for your application. Express.js is a web framework for Node.js.