[javascript] Uncaught TypeError: Cannot read properties of undefined (reading 'classList') modal.js:313

버전

Bootstrap 5.13

Error

modal에 값을 전달하기 위해 script로 .modal("show")를 사용하여 변환하는 과정에서 오류가 생겼습니다.

modal.js:313 Uncaught TypeError: Cannot read properties of undefined (reading 'classList')
    at he._isAnimated (modal.js:313)
    at he._initializeBackDrop (modal.js:195)
    at new he (modal.js:83)
    at Function.getOrCreateInstance (base-component.js:55)
    at HTMLButtonElement.<anonymous> (modal.js:421)
    at HTMLDocument.s (event-handler.js:119)

code

<button type="button" class="btn btn-primary restBtn" data-bs-toggle="modal" data-method="POST">
 
<div class="modal fade" id="memberRestModal" tabindex="-1" aria-labelledby="newMemberModalLabel" aria-hidden="true">
    <div class="modal-dialog">
        <div class="modal-content">
            <div class="modal-header">
                <h5 class="modal-title" id="newMemberModalLabel">New message</h5>
                <button type="button" class="btn-close" data-bs-dismiss="modal" aria-label="Close"></button>
            </div>
            <div class="modal-body">
                <form class="row g-3" id="newMemberInfo-Form">
                    <div class="col-md-6">
                        <label for="id" class="col-form-label">Id:</label>
                        <input type="text" name="userId" class="form-control" id="id">
                    </div>
                    <div class="col-md-6">
                        <label for="name" class="col-form-label">Name:</label>
                        <input type="text" name="userName" class="form-control" id="name">
                    </div>
                    <div class="mb-3">
                        <label for="pass" class="col-form-label">Password:</label>
                        <input type="text" name="userPass" class="form-control" id="pass">
                    </div>
 
                    <div class="mb-3">
                        <label for="confirm-pass" class="col-form-label">Confirm Password:</label>
                        <input type="text" class="form-control" id="confirm-pass">
                    </div>
                    <fieldset class="row mb-3">
                        <legend class="col-form-label col-sm-2 pt-0">IsAdmin</legend>
                        <div class="col-sm-10">
                            <div class="form-check">
                                <input class="form-check-input" type="radio" name="isAdmin" id="isAdminY" value="1" >
                                <label class="form-check-label" for="isAdminY">
                                    yes
                                </label>
                            </div>
                            <div class="form-check">
                                <input class="form-check-input" type="radio" name="isAdmin" id="isAdminN" value="0" checked>
                                <label class="form-check-label" for="isAdminN">
                                    no
                                </label>
                            </div>
                        </div>
                    </fieldset>
 
                </form>
                <div class="modal-footer">
                    <button type="button" class="btn btn-secondary" data-bs-dismiss="modal">Close</button>
                    <button type="submit" class="btn btn-primary" id="addNewMemberBtn" data-path="member" data-method="POST">Add</button>
                </div>
            </div>
        </div>
    </div>
</div>

script

$("#content-body").on("click", ".restBtn", function (){
            let method = $(this).data("method");
            $("#addNewMemberBtn").data("method", method);
            console.log($("#addNewMemberBtn").data("method"));
            $("#memberRestModal").modal("show");
        })

기능상 아무런 이상도 없지만 개발자 도구로 확인 시 버튼 클릭마다 error가 발생.

Reason

<button> 태그에 data-bs-toggle을 지워주니 해결됬습니다. data-bs- 관련 속성들은 script 없이 창을 띄울 때 사용하는 속성인 듯 합니다.

그러니 javascript로 변환 시 data-bs- 속성은 삭제 후 처리해 주시면 error가 발생하지 않습니다.