A 기본 세팅 getbootstrap.com/docs/4.5/getting-started/introduction/ -viewport tag는 모바일 스케일링에 필요 Hello, world! Data attributes -only one set of data attribute can be used per element. Events -custom events can be used for unique action. $('#myModal').on('show.bs.modal', function (e) { if (!data) { return e.preventDefault() // stops modal from being shown } }) Programmatic API -Bootstrap plugins can b..