Cesium JS API
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GregorianDate

GregorianDate 表示公历日期时间,以世界协调时间 (UTC) 为基础,是 CesiumJS 中的一个重要的时间类。

语法

new Cesium.GregorianDate(year, month, day, hour, minute, second, millisecond);

参数

  • year <Number>: 年份 (必需)。
  • month <Number>: 月份,范围从 1 到 12 (必需)。
  • day <Number>: 日,范围从 1 到 31,具体取决于月份 (必需)。
  • hour <Number>: 小时,范围从 0 到 23 (可选,默认值为 0)。
  • minute <Number>: 分钟,范围从 0 到 59 (可选,默认值为 0)。
  • second <Number>: 秒,范围从 0 到 59 (可选,默认值为 0)。
  • millisecond <Number>: 毫秒,范围从 0 到 999 (可选,默认值为 0)。

示例

var gregorianDate = new Cesium.GregorianDate(2021, 9, 27, 12, 34, 56, 789);

属性

{Number} year

得到年份。

{Number} month

得到月份,范围从 1 到 12。

{Number} day

获取日,范围从 1 到 31,具体取决于月份。

{Number} hour

获取小时,范围从 0 到 23。

{Number} minute

获取分钟,范围从 0 到 59。

{Number} second

获取秒,范围从 0 到 59。

{Number} millisecond

获取毫秒,范围从 0 到 999。

方法

setTime(hour, minute, second, millisecond)

设置日期时间到指定时间。

参数

  • {Number} hour:小时,范围从 0 到 23。
  • {Number} minute:分钟,范围从 0 到 59。
  • {Number} second:秒,范围从 0 到 59。
  • {Number} millisecond:毫秒,范围从 0 到 999。

equals(right)

判断指定日期时间是否与本地日期时间相同。

参数

  • {GregorianDate} right:与当前日期时间进行比较的日期时间。

返回值

  • {Boolean}:等于返回 true,否则返回 false。

clone(result)

克隆当前日期时间并将其值设置为指定的结果。

参数

  • {GregorianDate} result:此参数用于存储克隆日期时间,如果未传递值,则返回新的日期时间对象。

返回值

  • {GregorianDate}:克隆的日期时间对象。

toDate()

返回当前日期时间的 JavaScript Date 实例。

返回值

  • {Date}:JavaScript Date 实例。

示例

// 设置一个日期时间为 2021 年 9 月 27 日 12:34:56
var gregorianDate = new Cesium.GregorianDate(2021, 9, 27, 12, 34, 56);

// 克隆日期时间并增加一天
var tomorrow = gregorianDate.clone();
tomorrow.day++;

// 判断两个日期时间是否相等
var isEqual = gregorianDate.equals(tomorrow);

// 获取当前日期时间的 Date 对象
var jsDate = gregorianDate.toDate();

注意:月份是从 1 到 12,与 JavaScript Date 中的月份不同,由于历史原因 JavaScript Date 中的月份是从 0 到 11。因此,当使用 JavaScript Date 与 GregorianDate 进行比较时,月份应减去1。