install node modules using package.json 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 dependencies from package.json

npm install // installs dependencies listed in package.json

Example 3: 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.