How to Install Node JS in Ubuntu?

Open Terminal

Update package lists: `sudo apt update`

Install prerequisites: `sudo apt install -y curl ca-certificates`

Add NodeSource repository for the desired Node.js version: `curl -fsSL https://deb.nodesource.com/setup_lts.x | sudo -E bash -`

Install Node.js: `sudo apt install -y nodejs`

Verify installation: `node -v`

Verify npm installation: `npm -v`

Optional: install build tools: `sudo apt install -y build-essential`

Optional: install a specific Node.js version with NVM:

Install NVM: `curl -o- https://raw.githubusercontent.com/nvm-sh/nvm/v0.39.7/install.sh | bash`

Load NVM: `source ~/.bashrc`

Install Node.js LTS with NVM: `nvm install –lts`

Set default Node.js version with NVM: `nvm alias default lts/*`

Verify NVM-managed Node.js: `node -v`

Verify NPM with NVM: `npm -v`