npm installs code example
Example 1: npm install package as developer dependency
npm install --save-dev package
# example:
npm install --save-dev nodemon
Example 2: how to install node dependencies
#how to install project dependecies when you download project
# example:
npm install
#NOTE:: by entering only this command your all dependecies will automatically installed.
Example 3: how to install npm modules
npm install packagename