update nodejs version ubuntu code example

Example 1: updating node js ubuntu

curl -sL https://deb.nodesource.com/setup_14.x | sudo -E bash -
sudo apt-get install -y nodejs

Example 2: update npm version ubuntu

npm install -g npm

Example 3: update nodejs ubuntu

curl -sL https://deb.nodesource.com/setup_15.x | sudo -E bash -
sudo apt-get install -y nodejs