2个日期比较间隔天数

function daysBetweenDates(dateString1, dateString2) {

    // 将输入的字符串转换成 Date 对象

    const date1 = new Date(dateString1.slice(0, 4), dateString1.slice(4, 6) - 1, dateString1.slice(6, 8));

    const date2 = new Date(dateString2.slice(0, 4), dateString2.slice(4, 6) - 1, dateString2.slice(6, 8));

    // 计算时间戳差值（单位：毫秒）

    const timeDifference = Math.abs(date2.getTime() - date1.getTime());

    // 转换成天数

    const dayDifference = Math.ceil(timeDifference / (1000 * 3600 * 24));

    return dayDifference;

}

// 示例

const days = daysBetweenDates('20241105', '20241030');

console.log(days);  // 输出应该是 6