Let's talk about how to use npm and GitHub to complete the installation of the library

When developing web applications, we usually need to use many third-party libraries to help us complete some common functions. Among them, npm and GitHub are two very commonly used tools, which provide convenient ways to install and manage libraries. This article will introduce how to use npm and GitHub to complete the installation of the library.

1. npm installation

npm is the package management tool for Node.js, which allows us to easily install and manage JavaScript libraries. npm will be installed in the Node.js installation directory by default, so we need to install Node.js first.

1. Installing Node.js

We can go to the official website of Node.js to download the latest version of Node.js, and then follow the installation wizard to install it. After the installation is complete, open the command terminal and enter the following command. If the corresponding version number can be output, it means that Node.js is installed successfully.

node -v

2. Configuring npm

Normally, npm is installed together with Node.js. After the installation is complete, we can use the following command to view the version number of npm:

npm -v

If the corresponding version number can be output, it means that npm has been installed successfully. However, usually, we also need to do some configuration of npm.

First, we need to modify the installation path of npm. Enter the following command in the command terminal to view the global installation path of npm:

npm config get prefix

Then, we can modify the global installation path of npm through the following command:

npm config set prefix <path></path>

Among them, <path></path> is the global installation path we want to set. After completing the modification, we can use the following command to verify whether the installation path has been modified:

npm config get prefix

If the output is the path we just set, it means that we have successfully modified the global installation path of npm.

2. Use npm to install the library

When we use npm to install, we can use the following command:

npm install <package></package>

Among them, <package></package> is the name of the package to be installed. After executing this command, npm will download and install the corresponding package from the official library.

In addition, we can also use the following command to install the specified version of the package:

npm install <package>@<version></version></package>

Where, <version></version> is the specified version number.

When we need to install multiple packages, we can use the following command:

npm install <package1> <package2> <package3></package3></package2></package1>

At the same time, we can also use the following command to install the package into the local project:

npm install <package> --save</package>

3. Use GitHub to install the library

GitHub is an online code hosting service, we can use it to install and manage libraries. When using GitHub to install a library, we need to go through the following steps:

1. Find the library to install on GitHub

We can enter the library to install in the GitHub search box the name of the library, and then select the corresponding library through the search results.

2. Clone the library to local

After finding the library that needs to be installed, we can clone the library from GitHub to local through the following command:

git clone <repository></repository>

Among them, <repository></repository> is the address of the cloned library.

3. Installation library dependencies

After the cloning is completed, we still need to perform some configuration and install dependencies. First, we need to enter the directory where the cloned library is located and use the following command to install the dependencies:

npm install

This command will find and install all dependencies. After successful execution, we can use the functions provided by the library.

4. Summary

Whether you use npm or GitHub, they both provide convenient ways to install and manage libraries. We can choose one of the methods for installation and management according to our own needs. Through the above steps, you can easily use various JavaScript libraries in your project to improve development efficiency.

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