减一年、减一月、减一天、减一分、减一秒

// nowDate.setHours(0)
// nowDate.setMinutes(0)
// nowDate.setSeconds(0)
// nowDate.setMilliseconds(0)

// 减一年
let nowDate1 = new Date()
let lastYear = nowDate1.setFullYear(nowDate1.getFullYear() - 1)
console.log(
    new Date(lastYear).getFullYear() + '-' + (new Date(lastYear).getMonth() + 1) + '-' + new Date(lastYear).getDate()
)

// 减一月
let nowDate2 = new Date()
let lastMonth = nowDate2.setMonth(nowDate2.getMonth() - 1)
console.log(
    new Date(lastMonth).getFullYear() + '-' + (new Date(lastMonth).getMonth() + 1) + '-' + new Date(lastMonth).getDate()
)

// 减一天 2023-10-20
let nowDate3 = new Date()
let yesterday = nowDate3.setDate(nowDate3.getDate() - 1)

console.log(
    new Date(yesterday).getFullYear() + '-' + (new Date(yesterday).getMonth() + 1) + '-' + new Date(yesterday).getDate()
)

// 减一小时
let nowDate4 = new Date()
let lastHour = nowDate4.setHours(nowDate4.getHours() - 1)
console.log(
    new Date(lastHour).getFullYear() +
        '-' +
        (new Date(lastHour).getMonth() + 1) +
        '-' +
        new Date(lastHour).getDate() +
        ' ' +
        new Date(lastHour).getHours() +
        ':' +
        new Date(lastHour).getMinutes() +
        ':' +
        new Date(lastHour).getSeconds()
)
//减一分钟
let nowDate5 = new Date()
let lastMinutes = nowDate5.setMinutes(nowDate5.getMinutes() - 1)
console.log(
    new Date(lastMinutes).getFullYear() +
        '-' +
        (new Date(lastMinutes).getMonth() + 1) +
        '-' +
        new Date(lastMinutes).getDate() +
        ' ' +
        new Date(lastMinutes).getHours() +
        ':' +
        new Date(lastMinutes).getMinutes() +
        ':' +
        new Date(lastMinutes).getSeconds()
)

let nowDate6 = new Date()
let lastSeconds = nowDate6.setSeconds(nowDate6.getSeconds() - 1)
console.log(
    new Date(lastSeconds).getFullYear() +
        '-' +
        (new Date(lastSeconds).getMonth() + 1) +
        '-' +
        new Date(lastSeconds).getDate() +
        ' ' +
        new Date(lastSeconds).getHours() +
        ':' +
        new Date(lastSeconds).getMinutes() +
        ':' +
        new Date(lastSeconds).getSeconds()
)