install node modules in node js code example

Example 1: how to install node modules

npm install -g node-modules

Example 2: install node_modules

npm install

Example 3: install node modules

// Install as a dependency
npm install --save packageName
// OR
npm install --save package1 package2
// OR
npm install --save package@version
// OR
npm i -s packageName

// Install as a dev-dependency
npm install --save-dev package@version
// OR
npm i -D packageName

//Install globally
npm install --global packageName
//OR
npm i -g packageName

// You might need SU access on macos/linux to install globally

Example 4: how to install node_module

ls node_modules

//this command above is typed when you install a new vueJS project and dont have a 'node_modules', then run npm run serve