Nodejs Study notes-NPM Introduction

Https://docs.npmjs.com/README.html

This is Npmjs's official website, for a certain English-based friends, reading such a raw document, will certainly benefit.

1. What is NPM?

NPM is the abbreviation for Node Package Manager, which is the bundle management tool for node. js. NPM makes it easier for JS developers to share and reuse code, and NPM can automatically update the code as other developers need to reuse it in their own applications.

These reusable code is called packages, sometimes called moudles. The package is actually a folder with one or more files, which also contains a file called "Package.json" (containing some metadata related to this file). For example, a Web site is composed of more than 10 or hundreds of packages, of course, these packages are usually very small.

There are three common usage scenarios for NPM:

(1), allowing users to download third-party packages written by others from the NPM server to local use

(2), allow users to download and install from the NPM Server command-line programs written by others to local use

(3), allowing users to upload their own packages or command-line programs to the NPM server for others to use

2. Update NPM

NPM is also installed with node installed, but NPM is updated more frequently than node, so to make sure it's the latest version, we can do this:

NPM install [email protected]-G

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The whole process takes about 3 minutes, open My computer into the C drive--users--administrator.minserever--appdata can see automatically added several folders

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command line input Node-v to view node version

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(Follow up to continue to learn, continue to update ...)

Nodejs Study notes-NPM Introduction