[js] 시간 formatting 하기

날짜를 필요한 형식 (YYYY-MM-DDTHH:MM:SS)으로 변환

/**
 * NOTE: 날짜를 필요한 형식(YYYY-MM-DDTHH:MM:SS)으로 변환
 * @function formatToSimpleISOString
 * @param {string} dateString - 날짜 문자열
 * @returns {string} - 변환된 날짜 문자열
 */
const formatToSimpleISOString = (dateTimeStr) => {
    const date = new Date(dateTimeStr);

    const year = date.getFullYear();
    const month = String(date.getMonth() + 1).padStart(2, '0');
    const day = String(date.getDate()).padStart(2, '0');
    const hours = String(date.getHours()).padStart(2, '0');
    const minutes = String(date.getMinutes()).padStart(2, '0');
    const seconds = String(date.getSeconds()).padStart(2, '0');

    return `${year}-${month}-${day}T${hours}:${minutes}:${seconds}`;
}