nodejs environment configuration

1 Install visual studio 2015

2 Install python2.7 Note that it is installed under C:\Python27 and set the python environment variable

   PATH plus C:\Python27 and c:\Python27\Scripts 

3 Go to the official website to download and install nodejs, install it step by step, pay attention to create a new node_cache, node_global in the installation directory

4 Set the environment variable PA to represent the installation path

  Under user variables:  PA \node_cache\node_modules

 Under system environment variables: Add NODE_PATH= PA \node_global\node_modules

 and add %NODE_PATH% to the path

5 node global settings

  npm config set prefix "PA\node_global"

npm config set cache " PA \node_cache"

6 If the control panel deletes node, you need to manually find it in C:\Users\ [user] \.npmrc and delete it