Shulou(Shulou.com)06/02 Report--

This article mainly explains "Why install nodejs". Friends who are interested might as well take a look. The method introduced in this paper is simple, fast and practical. Next, let the editor take you to learn "Why install nodejs"!

Installation reasons: 1, Nodejs development is very efficient, and the code is simple; 2, Nodejs can be asynchronous programming, in dealing with IO-intensive applications have advantages; 3, project development using NPM package management tools can be very convenient to install, share, distribute code, manage project dependencies, and NPM runs on node.js.

This tutorial operating environment: windows7 system, nodejs version 12.19.0, DELL G3 computer.

Why install nodejs?

The development of Nodejs is very efficient and the code is simple, thanks to Nodejs's single-threaded mechanism. Another feature of Nodejs, asynchronous programming, gives Nodejs a clear advantage in dealing with IO-intensive applications.

Node.js has a great package management system, NPM.

One thing that should never be ignored when discussing Node.js is support for package management using built-in npm tools, which are installed by default in every Node.js environment. The concept of the npm module is very similar to Ruby Gems: a set of reusable components that can be easily installed through an online repository with version and dependency management.

You can install almost any package / library by running npm install package name. In addition, dependencies can be tracked through the package.json file. Therefore, the Node.js library is easy to clone, and running "npm install" installs all the dependencies.

You can find a complete list of packaged modules on the npm website, or you can access them using the npm CLI tool that is automatically installed with Node.js. The module ecosystem is open to everyone, anyone can publish their own modules, and the released modules will appear in the npm repository.

Some useful npm modules are:

Express-Express.js, a Sinatra-inspired Node.js Web development framework, is the de facto standard for most Node.js applications today.

Hapi-A modular and very easy-to-use configuration-centric framework for building Web and service applications

Connect-Connect is Node.js 's extensible HTTP server framework that provides a series of high-performance "plug-ins" called middleware as the basis for Express.

Socket.io and sockjs-the two most common websockets server-side components today.

Pug (formerly Jade)-one of the popular template engines inspired by HAML, the default option in Express.js.

Mongodb and mongojs-- MongoDB wrappers that provide API for the MongoDB object database in Node.js.

Redis-Redis client.

Forever-- is probably the most common utility to ensure that a given node script runs continuously. Keep the Node.js process in production in the event of an unexpected failure.

Bluebird-full-featured Promises/A+ implementation with excellent performance

Moment-A lightweight JavaScript date library for parsing, validating, manipulating, and formatting dates.

The list is still growing. There are many useful bags for everyone to use.

Advantages of Node:

As a new front-end framework and background language, Node has many attractions:

RESTful API

Single thread

Node can still process tasks concurrently without adding additional threads-Node.js is single-threaded. It implements concurrent operations through event loops (event loop), and we should take full advantage of this-avoid blocking operations as much as possible and use more non-blocking operations instead.

Non-blocking IO

V8 virtual machine

Event driven

At this point, I believe that everyone has a deeper understanding of "Why to install nodejs", might as well come to the actual operation of it! Here is the website, more related content can enter the relevant channels to inquire, follow us, continue to learn!

Welcome to subscribe "Shulou Technology Information " to get latest news, interesting things and hot topics in the IT industry, and controls the hottest and latest Internet news, technology news and IT industry trends.