date-manip

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date-manip / isSameOrBefore

isSameOrBefore

函数

default()

default(date, input, unit?): boolean

定义于: src/isSameOrBefore.ts:63

Checks if a date is the same as or before another date or a specified time unit. 检查一个日期是否与另一个日期或指定的时间单位相同或在其之前。

参数

date

Date

The date to compare. (要比较的日期。)

input

DateInput

The date or time unit to compare against. (要比较的日期或时间单位。)

unit?

Unit

The unit of time to compare (e.g., 'year', 'month', 'day', 'hour', 'minute', 'second', 'millisecond'). (要比较的时间单位，例如 'year'、'month'、'day'、'hour'、'minute'、'second'、'millisecond'。)

返回

boolean

A boolean indicating whether the first date is the same as or before the second date or time unit. (布尔值，表示第一个日期是否与第二个日期或时间单位相同或在其之前。)

示例

// Checking if a date is the same as or before another date (检查一个日期是否与另一个日期相同或在其之前)
const date1 = new Date('2023-10-01');
const date2 = new Date('2023-10-01');
const isSameOrBeforeDate = isSameOrBefore(date1, date2, 'day');
console.log(isSameOrBeforeDate); // Outputs: true (输出: true)

// Checking if a date is before another date (检查一个日期是否在另一个日期之前)
const date3 = new Date('2023-09-30');
const isSameOrBeforeDate2 = isSameOrBefore(date3, date2, 'day');
console.log(isSameOrBeforeDate2); // Outputs: true (输出: true)

// Checking if a date is the same as or before a specific year (检查一个日期是否与特定年份相同或在其之前)
const date4 = new Date('2022-12-31');
const isSameOrBeforeYear = isSameOrBefore(date4, 2023, 'year');
console.log(isSameOrBeforeYear); // Outputs: true (输出: true)

// Checking if a date is the same as or before a specific month (检查一个日期是否与特定月份相同或在其之前)
const date5 = new Date('2023-09-30');
const isSameOrBeforeMonth = isSameOrBefore(date5, '2023-10', 'month');
console.log(isSameOrBeforeMonth); // Outputs: true (输出: true)

// Checking if a date is the same as or before a specific day (检查一个日期是否与特定天数相同或在其之前)
const date6 = new Date('2023-10-01');
const isSameOrBeforeDay = isSameOrBefore(date6, '2023-10-01', 'day');
console.log(isSameOrBeforeDay); // Outputs: true (输出: true)

// Checking if a date is the same as or before a specific hour (检查一个日期是否与特定小时相同或在其之前)
const date7 = new Date('2023-10-01T12:00:00');
const isSameOrBeforeHour = isSameOrBefore(date7, '2023-10-01T12:00:00', 'hour');
console.log(isSameOrBeforeHour); // Outputs: true (输出: true)

// Checking if a date is the same as or before a specific minute (检查一个日期是否与特定分钟相同或在其之前)
const date8 = new Date('2023-10-01T12:00:00');
const isSameOrBeforeMinute = isSameOrBefore(date8, '2023-10-01T12:00:00', 'minute');
console.log(isSameOrBeforeMinute); // Outputs: true (输出: true)

// Checking if a date is the same as or before a specific second (检查一个日期是否与特定秒数相同或在其之前)
const date9 = new Date('2023-10-01T12:00:00');
const isSameOrBeforeSecond = isSameOrBefore(date9, '2023-10-01T12:00:00', 'second');
console.log(isSameOrBeforeSecond); // Outputs: true (输出: true)

// Checking if a date is the same as or before a specific millisecond (检查一个日期是否与特定毫秒数相同或在其之前)
const date10 = new Date('2023-10-01T12:00:00.000');
const isSameOrBeforeMillisecond = isSameOrBefore(date10, '2023-10-01T12:00:00.000', 'millisecond');
console.log(isSameOrBeforeMillisecond); // Outputs: true (输出: true)