Install nodejs on RHEL7

1. Check the latest version of nodejs available on site

https://nodejs.org/en/
say it is LTS- 14.15.3 and Current — 15.5.0

2. Add Node.js Yum Repository

#curl -sL https://rpm.nodesource.com/setup_14.x | sudo -E bash -
or 
#curl -sL https://rpm.nodesource.com/setup_15.x | sudo -E bash -

3. Install Node.js

#yum install nodejs

4. Check Node.js and NPM Version

#node -v
#npm -v