JAVASCRIPT

install specific node version

npm install -g npm@15.0.0

npm install specific version

$ npm i packageName@1.2.3

install specific version of node

nvm install v14.16.0 

install specific version of npm for your project

//To install a specific version of npm locally for your project 
$ npm install npm@version //replace version with the npm version you want to install

//To install globally
$ npm install -g npm@version //replace version with the npm version you want to install

how to install specific package version npm

$ npm install express@4.16.1

+ express@4.16.1
added 48 packages from 36 contributors and audited 121 packages in 2.986s
found 0 vulnerabilities

node install specific version

nvm install v10.15 //v10.15 is a version i want.

npm install specific version

npm i yourPackage@version

Example:
npm i ngx-owl-carousel-o@7.0.4

node install specific version

curl -o- https://raw.githubusercontent.com/creationix/nvm/v0.34.0/install.sh | bash