Install nodejs or node.js on CentOS / RHEL / fedora

To install node.js ( nodejs ) on CentOS / RHEL / fedora, Run following commands.

# sudo yum install nodejs

Install Packages using npm on CentOS / RHEL / fedora
First install npm on centos / RHEL / fedora

# sudo yum install npm

Now install packages using npm
Install mongodb :

# npm install mongodb

Install express :

# npm install express