//input 태그 삭제
inputmode="numeric" pattern="[0-9]*"//input에 태그 추가
type = "tel" autocomplete="off" oninput="autoHyphen(this)" onfocus="this.placeholder=''"출처1 https://gurtn.tistory.com/86
출처2 https://jongs-story.tistory.com/entry/javascript-jQuery%EB%A1%9C-%EC%A0%84%ED%99%94%EB%B2%88%ED%98%B8-%ED%98%95%EC%8B%9D-%EC%9C%A0%ED%9A%A8%EC%84%B1-%EA%B2%80%EC%82%AC%ED%95%98%EA%B8%B0-%EC%A0%95%EA%B7%9C-%ED%91%9C%ED%98%84%EC%8B%9D-%ED%99%9C%EC%9A%A9-%EB%B0%A9%EB%B2%95
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