728x90
<head>
<link rel="stylesheet" href="https://stackpath.bootstrapcdn.com/bootstrap/4.2.1/css/bootstrap.min.css" integrity="sha384-GJzZqFGwb1QTTN6wy59ffF1BuGJpLSa9DkKMp0DgiMDm4iYMj70gZWKYbI706tWS" crossorigin="anonymous">
<script src="https://code.jquery.com/jquery-3.3.1.slim.min.js" integrity="sha384-q8i/X+965DzO0rT7abK41JStQIAqVgRVzpbzo5smXKp4YfRvH+8abtTE1Pi6jizo" crossorigin="anonymous"></script>
<script src="https://cdnjs.cloudflare.com/ajax/libs/popper.js/1.14.6/umd/popper.min.js" integrity="sha384-wHAiFfRlMFy6i5SRaxvfOCifBUQy1xHdJ/yoi7FRNXMRBu5WHdZYu1hA6ZOblgut" crossorigin="anonymous"></script>
<script src="https://stackpath.bootstrapcdn.com/bootstrap/4.2.1/js/bootstrap.min.js" integrity="sha384-B0UglyR+jN6CkvvICOB2joaf5I4l3gm9GU6Hc1og6Ls7i6U/mkkaduKaBhlAXv9k" crossorigin="anonymous"></script>
</head>
head에 이것을 전부 써줬는지 보자,,,
link rel만 복붙하고 나머지 세줄은 안써줬더니 dropdown 메뉴가 실행되지 않았었다ㅜㅜ
부트스트랩 사용할땐, 되도록이면 4줄 모두 추가해주도록 하자!
'Develop > Resolve errors' 카테고리의 다른 글
| [Server] GET과 POST의 param 전달방식이 다르다! in postman (0) | 2019.02.07 |
|---|---|
| Android Retrofit response null 처리하고 싶을 때 (해결방안 없음 주의) (0) | 2019.02.05 |
| [pylint] Value 'self.body' is unsubscriptable [E1136] (0) | 2019.01.30 |
| java.lang.NumberFormatException: For input string: "" (0) | 2019.01.25 |
| [Vscode] E1101:Class has no ‘objects’ member (0) | 2019.01.24 |