📅 最后修改于: 2020-10-24 05:28:24 🧑 作者: Mango
JavaScript日期对象可用于获取年，月和日。您可以借助JavaScript日期对象在网页上显示计时器。
您可以使用不同的Date构造函数来创建日期对象。它提供了获取和设置日，月，年，小时，分钟和秒的方法。
您可以使用Date构造函数的4个变体创建日期对象。
让我们看一下JavaScript日期方法及其说明的列表。
| Methods | Description |
|---|---|
| getDate() | It returns the integer value between 1 and 31 that represents the day for the specified date on the basis of local time. |
| getDay() | It returns the integer value between 0 and 6 that represents the day of the week on the basis of local time. |
| getFullYears() | It returns the integer value that represents the year on the basis of local time. |
| getHours() | It returns the integer value between 0 and 23 that represents the hours on the basis of local time. |
| getMilliseconds() | It returns the integer value between 0 and 999 that represents the milliseconds on the basis of local time. |
| getMinutes() | It returns the integer value between 0 and 59 that represents the minutes on the basis of local time. |
| getMonth() | It returns the integer value between 0 and 11 that represents the month on the basis of local time. |
| getSeconds() | It returns the integer value between 0 and 60 that represents the seconds on the basis of local time. |
| getUTCDate() | It returns the integer value between 1 and 31 that represents the day for the specified date on the basis of universal time. |
| getUTCDay() | It returns the integer value between 0 and 6 that represents the day of the week on the basis of universal time. |
| getUTCFullYears() | It returns the integer value that represents the year on the basis of universal time. |
| getUTCHours() | It returns the integer value between 0 and 23 that represents the hours on the basis of universal time. |
| getUTCMinutes() | It returns the integer value between 0 and 59 that represents the minutes on the basis of universal time. |
| getUTCMonth() | It returns the integer value between 0 and 11 that represents the month on the basis of universal time. |
| getUTCSeconds() | It returns the integer value between 0 and 60 that represents the seconds on the basis of universal time. |
| setDate() | It sets the day value for the specified date on the basis of local time. |
| setDay() | It sets the particular day of the week on the basis of local time. |
| setFullYears() | It sets the year value for the specified date on the basis of local time. |
| setHours() | It sets the hour value for the specified date on the basis of local time. |
| setMilliseconds() | It sets the millisecond value for the specified date on the basis of local time. |
| setMinutes() | It sets the minute value for the specified date on the basis of local time. |
| setMonth() | It sets the month value for the specified date on the basis of local time. |
| setSeconds() | It sets the second value for the specified date on the basis of local time. |
| setUTCDate() | It sets the day value for the specified date on the basis of universal time. |
| setUTCDay() | It sets the particular day of the week on the basis of universal time. |
| setUTCFullYears() | It sets the year value for the specified date on the basis of universal time. |
| setUTCHours() | It sets the hour value for the specified date on the basis of universal time. |
| setUTCMilliseconds() | It sets the millisecond value for the specified date on the basis of universal time. |
| setUTCMinutes() | It sets the minute value for the specified date on the basis of universal time. |
| setUTCMonth() | It sets the month value for the specified date on the basis of universal time. |
| setUTCSeconds() | It sets the second value for the specified date on the basis of universal time. |
| toDateString() | It returns the date portion of a Date object. |
| toISOString() | It returns the date in the form ISO format string. |
| toJSON() | It returns a string representing the Date object. It also serializes the Date object during JSON serialization. |
| toString() | It returns the date in the form of string. |
| toTimeString() | It returns the time portion of a Date object. |
| toUTCString() | It converts the specified date in the form of string using UTC time zone. |
| valueOf() | It returns the primitive value of a Date object. |
让我们看一下print日期对象的简单示例。它同时打印日期和时间。
Current Date and Time:
输出：
Current Date and Time: Thu Oct 22 2020 18:16:27 GMT+0800 (China Standard Time)
让我们看看另一个print日期/月份/年份的代码。
输出：
Date is: 22/10/2020
让我们看一下print系统当前时间的简单示例。
Current Time:
输出：
Current Time: 18:16:27
让我们看一个使用JavaScript日期对象显示数字时钟的简单示例。
在JavaScript中有两种设置间隔的方法：通过setTimeout()或setInterval()方法。
Current Time:
输出：
Current Time: