JS - [ 모든 자식 엘리먼트 삭제 ]

const memberList = document.querySelector('ul.member-list');

while (memberList.hasChildNodes()) {
    memberList.removeChild(memberList.firstChild );       
}

 

const datePlanContainer = document.querySelector('ul.date-plan-container');

while (datePlanContainer.firstChild) {
	datePlanContainer.removeChild(datePlanContainer.lastChild);
}

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참조

https://unikys.tistory.com/249

[자바스크립트] 모든 자식 엘레멘트 삭제하기 (Remove all children)