search
HomeWeb Front-endFront-end Q&AHow to check the nodejs version (three methods)

Node.js is a very popular open source JavaScript runtime environment that runs on multiple platforms, including Linux, OS X, and Windows. However, for some novice developers, they may not know how to check the version of Node.js currently installed on the system. This article will introduce three methods to check the Node.js version.

Method 1: Use the command line to check the Node.js version

Whether you are on Linux, OS X or Windows operating system, you can check the Node.js version by opening the terminal command line. The following is how to check the Node.js version from the command line of different operating systems:

Linux and OS X

  1. Open the terminal
  2. Enter the following command:

    $ node -v

    In this way, the system will output the current version number of Node.js.

Windows

  1. Open the Node.js command prompt
  2. Enter the following command:

    > node -v

    Just You can get the current Node.js version number.

Method 2: Obtain the Node.js version information in the program through Node.js

In addition to viewing the Node.js version information on the command line, Node. js also provides a process global object, which provides process.version and process.versions properties to allow Node.js applications to Read and output version information.

The following is a simple Node.js code example for obtaining Node.js version information:

console.log('Node.js 版本信息:', process.version);
console.log('Node.js 依赖包版本信息:', process.versions);

The output results are as follows:

Node.js 版本信息: v10.16.3
Node.js 依赖包版本信息: {
  http_parser: '2.8.0',
  node: '10.16.3',
  v8: '6.8.275.32-node.54',
  uv: '1.28.0',
  zlib: '1.2.11',
  ares: '1.15.0',
  modules: '64',
  nghttp2: '1.39.2',
  napi: '4',
  openssl: '1.1.1c',
  icu: '64.2',
  unicode: '12.1'
}

Method 3: Through Node .js official website View Node.js version information

The Node.js official website provides a page that provides information about a specific version, including release date, maintenance status, and important security tips. The advantage of this page is that you can find release notes for each major version, as well as features introduced and removed by a specific version. URL: https://nodejs.org/en/download/releases/

Summary

This article shows three different ways to view the version of Node.js currently installed on the system. The first is to use the command to find the Node.js version installed in the current system. This is the simplest and most commonly used method. The second is to obtain the version information of Node.js in the program. This method requires a certain understanding of the code. The third method is to query the version information through the Node.js official website. This method is suitable for people who want to know the details and functions of a specific version. Either way, you can easily view the currently installed version of Node.js.

The above is the detailed content of How to check the nodejs version (three methods). For more information, please follow other related articles on the PHP Chinese website!

Statement
The content of this article is voluntarily contributed by netizens, and the copyright belongs to the original author. This site does not assume corresponding legal responsibility. If you find any content suspected of plagiarism or infringement, please contact admin@php.cn
useState() vs. useReducer(): Choosing the Right Hook for Your State NeedsuseState() vs. useReducer(): Choosing the Right Hook for Your State NeedsApr 24, 2025 pm 05:13 PM

ChooseuseState()forsimple,independentstatevariables;useuseReducer()forcomplexstatelogicorwhenstatedependsonpreviousstate.1)useState()isidealforsimpleupdatesliketogglingabooleanorupdatingacounter.2)useReducer()isbetterformanagingmultiplesub-valuesorac

Managing State with useState(): A Practical TutorialManaging State with useState(): A Practical TutorialApr 24, 2025 pm 05:05 PM

useState is superior to class components and other state management solutions because it simplifies state management, makes the code clearer, more readable, and is consistent with React's declarative nature. 1) useState allows the state variable to be declared directly in the function component, 2) it remembers the state during re-rendering through the hook mechanism, 3) use useState to utilize React optimizations such as memorization to improve performance, 4) But it should be noted that it can only be called on the top level of the component or in custom hooks, avoiding use in loops, conditions or nested functions.

When to Use useState() and When to Consider Alternative State Management SolutionsWhen to Use useState() and When to Consider Alternative State Management SolutionsApr 24, 2025 pm 04:49 PM

UseuseState()forlocalcomponentstatemanagement;consideralternativesforglobalstate,complexlogic,orperformanceissues.1)useState()isidealforsimple,localstate.2)UseglobalstatesolutionslikeReduxorContextforsharedstate.3)OptforReduxToolkitorMobXforcomplexst

React's Reusable Components: Enhancing Code Maintainability and EfficiencyReact's Reusable Components: Enhancing Code Maintainability and EfficiencyApr 24, 2025 pm 04:45 PM

ReusablecomponentsinReactenhancecodemaintainabilityandefficiencybyallowingdeveloperstousethesamecomponentacrossdifferentpartsofanapplicationorprojects.1)Theyreduceredundancyandsimplifyupdates.2)Theyensureconsistencyinuserexperience.3)Theyrequireoptim

Virtual DOM in React: Boosting Performance Through Efficient UpdatesVirtual DOM in React: Boosting Performance Through Efficient UpdatesApr 24, 2025 pm 04:41 PM

TheVirtualDOMisalightweightin-memorycopyoftherealDOMusedbyReacttooptimizeUIupdates.ItboostsperformancebyminimizingdirectDOMmanipulationthroughaprocessofupdatingtheVirtualDOMfirst,thenapplyingonlynecessarychangestotheactualDOM.

HTML and React's Integration: A Practical GuideHTML and React's Integration: A Practical GuideApr 21, 2025 am 12:16 AM

HTML and React can be seamlessly integrated through JSX to build an efficient user interface. 1) Embed HTML elements using JSX, 2) Optimize rendering performance using virtual DOM, 3) Manage and render HTML structures through componentization. This integration method is not only intuitive, but also improves application performance.

React and HTML: Rendering Data and Handling EventsReact and HTML: Rendering Data and Handling EventsApr 20, 2025 am 12:21 AM

React efficiently renders data through state and props, and handles user events through the synthesis event system. 1) Use useState to manage state, such as the counter example. 2) Event processing is implemented by adding functions in JSX, such as button clicks. 3) The key attribute is required to render the list, such as the TodoList component. 4) For form processing, useState and e.preventDefault(), such as Form components.

The Backend Connection: How React Interacts with ServersThe Backend Connection: How React Interacts with ServersApr 20, 2025 am 12:19 AM

React interacts with the server through HTTP requests to obtain, send, update and delete data. 1) User operation triggers events, 2) Initiate HTTP requests, 3) Process server responses, 4) Update component status and re-render.

See all articles

Hot AI Tools

Undresser.AI Undress

Undresser.AI Undress

AI-powered app for creating realistic nude photos

AI Clothes Remover

AI Clothes Remover

Online AI tool for removing clothes from photos.

Undress AI Tool

Undress AI Tool

Undress images for free

Clothoff.io

Clothoff.io

AI clothes remover

Video Face Swap

Video Face Swap

Swap faces in any video effortlessly with our completely free AI face swap tool!

Hot Tools

MantisBT

MantisBT

Mantis is an easy-to-deploy web-based defect tracking tool designed to aid in product defect tracking. It requires PHP, MySQL and a web server. Check out our demo and hosting services.

SecLists

SecLists

SecLists is the ultimate security tester's companion. It is a collection of various types of lists that are frequently used during security assessments, all in one place. SecLists helps make security testing more efficient and productive by conveniently providing all the lists a security tester might need. List types include usernames, passwords, URLs, fuzzing payloads, sensitive data patterns, web shells, and more. The tester can simply pull this repository onto a new test machine and he will have access to every type of list he needs.

Atom editor mac version download

Atom editor mac version download

The most popular open source editor

EditPlus Chinese cracked version

EditPlus Chinese cracked version

Small size, syntax highlighting, does not support code prompt function

SublimeText3 Mac version

SublimeText3 Mac version

God-level code editing software (SublimeText3)