vue3 js获取今天、近24小时、近3天、近7天、近30天、近90天 的时间段

项目中需要获取今天、近24小时、近3天、近7天、近30天、近90天 的时间段，总结记录一下。

结果如下：

方法如下：

//计算时间方法
//今天方法
const toDay = () => {
    //获取当前时间戳
    let myDate = new Date();
    let year = myDate.getFullYear(); //获取完整的年份(4位,1970-????)
    let month = Number(myDate.getMonth() + 1) + ""; //获取当前月份(0-11,0代表1月)
    let date = myDate.getDate() + ""; //获取当前日(1-31)
    //获取当前时
    let hour =
        myDate.getHours() < 10 ? "0" + myDate.getHours() : myDate.getHours();
    //获取当前分
    let minute =
        myDate.getMinutes() < 10
            ? "0" + myDate.getMinutes()
            : myDate.getMinutes();
    //获取当前秒
    let second =
        myDate.getSeconds() < 10
            ? "0" + myDate.getSeconds()
            : myDate.getSeconds();
    if (date.length == 1) {
        date = "0" + date;
    }
    if (month.length == 1) {
        month = "0" + month;
    }
    //开始时间
    let startTime =
        year + "-" + month + "-" + date + " " + "00" + ":" + "00" + ":" + "00";
    //当前日期
    let now_time =
        year +
        "-" +
        month +
        "-" +
        date +
        " " +
        hour +
        ":" +
        minute +
        ":" +
        second;
    console.log("今天", startTime, now_time);
    var data = [startTime, now_time]
    return data;
}
//1天 3天 7天 30 30天 90天
const weekDay = (num) => {
    // 获取近七天的起始日期时间
    let startDate = new Date();
    startDate.setTime(startDate.getTime() - 24 * 60 * 60 * 1000 * num);
    let res =
        startDate.getFullYear() +
        "-" +
        (startDate.getMonth() + 1) +
        "-" +
        startDate.getDate();

    //获取当前时间戳
    let myDate = new Date();
    let year = myDate.getFullYear(); //获取完整的年份(4位,1970-????)
    let month = Number(myDate.getMonth() + 1) + ""; //获取当前月份(0-11,0代表1月)
    let date = myDate.getDate() + ""; //获取当前日(1-31)
    //获取当前时
    let hour =
        myDate.getHours() < 10 ? "0" + myDate.getHours() : myDate.getHours();
    //获取当前分
    let minute =
        myDate.getMinutes() < 10
            ? "0" + myDate.getMinutes()
            : myDate.getMinutes();
    //获取当前秒
    let second =
        myDate.getSeconds() < 10
            ? "0" + myDate.getSeconds()
            : myDate.getSeconds();

    if (date.length == 1) {
        date = "0" + date;
    }
    if (month.length == 1) {
        month = "0" + month;
    }
    //开始时间
    let startTime = res + " " + hour + ":" + minute + ":" + second;
    //结束时间
    let endTime =
        year +
        "-" +
        month +
        "-" +
        date +
        " " +
        hour +
        ":" +
        minute +
        ":" +
        second;
    console.log("近" + num + "天", startTime, endTime);
    var data = [startTime, endTime]
    return data;
}

取值如下：

toDay()//今天
weekDay(1)//近24小时
weekDay(3)//近3天
weekDay(7)//近7天
weekDay(30)//近30天
weekDay(90)//近90天