how to update node js version

1sudo npm install npm@latest -g

1//First, clear the npm cache:
2	npm cache clean -f
3
4//Install n, Node’s version manager:
5	npm install -g n
6    
7//With the n module installed, you can use it to:
8	Install the latest stable version: n stable
9	Install the latest release: n latest

1//check node version
2>node -v
3// let's install a program called n that will let us easily switch 
4//between Node versions.
5>npm install -g n
6//Upgrading to the latest stable version
7>n stable 
8//Changing to a specific version
9>n 10.16.0
10

1In cmd,
2  
3where node
4 
5$ cd "C:\Program Files\nodejs\node_modules\npm"
6
7$ npm install -g node-gyp@latest

1npm cache clean -f
2npm install -g n
3n stable

1nvm install v12.16.2