NPM basic command
npm install xxx
The XXX module is installed but not recorded to package.json in
NPM install XXX @ version number
Install the XXX module with the specified version number
npm install –save xxx
Install XXX module and record to package.json The dependency corresponding to the field is a module that the product environment must rely on
npm install –save-dev xxx
Install XXX module and record to package.json The dev dependency corresponding to the field is a module that the development environment must rely on
npm install –global xxx
Global installation of XXX module, not recorded to package.json
npm uninstall xxx
Delete XXX module
npm uninstall -g xxx
Delete XXX module globally