【工具】前端 js 判斷當前日期是否在當前自然周內

function isCurrentNaturalWeek(targetDate) {const today = new Date();const dayOfWeek = today.getDay(); // 0（周日）到6（周六）// 計算本周一的日期（自然周從周一開始）const monday = new Date(today);monday.setDate(today.getDate() - dayOfWeek + (dayOfWeek === 0 ? -6 : 1)); monday.setHours(0, 0, 0, 0);// 計算本周日的日期const sunday = new Date(monday);sunday.setDate(monday.getDate() + 6);sunday.setHours(23, 59, 59, 999);// 判斷目標日期是否在區間內return targetDate >= monday && targetDate <= sunday;
}// 示例：判斷今天（2025-02-27，周四）是否在當前自然周
const currentDate = new Date('2025-02-27');
console.log(isCurrentNaturalWeek(currentDate)); // true