How to install nodejs in windows environment?

[Video tutorial recommendation: node js tutorial]

1. What is nodejs

Node.js is a JavaScript running environment for Chrome V8 engine. Node.js uses an event-driven, non-blocking I/O model.

Node is a development platform that allows JavaScript to run on the server side. It makes JavaScript a scripting language on par with server-side languages ​​such as PHP and Python.

Developed in 2009 by the master Ryan Dahl.

Essentially node.js is not a library, it is a running environment or a js language interpreter

2. Installation under windows

2.1 Download the installation package

Official website for nodejs download, as shown in the figure below, select the 32-bit or 64-bit installation package to download according to the Windows version.

2.2 Double-click the installation package to install

You can go directly to next,

to determine the installation location selection, I usually install it in the D drive

..., and finally click finish

• After installing the installation package in the previous step, you need to check whether the installation is successful. Open win r and run, enter cmd to enter the command line interface. Enter the

  node -v and npm -v commands respectively to view the node version number and npm version number.

• The directory after installation is as shown below

npm install..., the module will be installed by default ## under the path C:\Users\username\AppData\Roaming #npm and npm_cache. No modifications are needed at this time, but it is convenient for managing the C drive data. At this time, we configure our customized global module installation path and cache path, and create two new folders in the current nodejs installation directory. They are node_global

node_cache` respectively.

At this time, you need to open win r and run, enter cmd to enter the command line interface, enter the following content to execute

npm config set perfix "D:\Program Files\nodejs\node_global"
npm config set cache  "D:\Program Files\nodejs\node_cache"

2.5 Configure environment variables

Create new
• NODE_PATH

  <div class="code" style="position:relative; padding:0px; margin:0px;"><pre class="brush:js;toolbar:false">NODE_PATH D:\Program Files\nodejs\node_global\node_modules</pre><div class="contentsignin">Copy after login</div></div>

in

of the user variable in #User variable
• , and modify the corresponding npm path value to the custom

  node_globalpath

  D:\Program Files\nodejs\node_global

  Copy after login
  2.6 Execute the test

  win r open and run cmd, executenpm install webpack -g

  to install webpack, the following picture will appear and the configuration is completed .

  The following content will be displayed accordingly in the customized file

  

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