form 외부에서 submit 버튼

<form th:method="delete" id="delete" th:action="@{'/post/delete/' + ${post.id}}" onSubmit="return deletePost()">
	<input type="hidden" name="_method" value="delete">
</form>
<button type="submit" form="delete" class="btn btn-danger mr-3 float-right mt-3 mb-3" th:if="${#strings.equals(post.author, username)}"><i class="bi bi-trash"></i> 삭제</button>

버튼의 form="formId"

 

 

참고 👇

https://negabaro.github.io/archive/how-to-post-button-out-to-form

html form바깥에서 submit하는 방법