deno.land / std@0.224.0 / datetime / day_of_year.ts

day_of_year.ts
نووسراو ببینە
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
// Copyright 2018-2024 the Deno authors. All rights reserved. MIT license.// This module is browser compatible.
import { DAY } from "./constants.ts";
/** * Returns the number of the day in the year in the local time zone. * * @param date Date to get the day of the year of. * @return Number of the day in the year in the local time zone. * * @example Basic usage * ```ts * import { dayOfYear } from "https://deno.land/std@$STD_VERSION/datetime/day_of_year.ts"; * * dayOfYear(new Date("2019-03-11T03:24:00")); // 70 * ``` */export function dayOfYear(date: Date): number { // Values from 0 to 99 map to the years 1900 to 1999. All other values are the actual year. (https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Date/Date) // Using setFullYear as a workaround
const yearStart = new Date(date);
yearStart.setFullYear(date.getFullYear(), 0, 0); const diff = (date.getTime() - date.getTimezoneOffset() * 60 * 1000) - (yearStart.getTime() - yearStart.getTimezoneOffset() * 60 * 1000);
return Math.floor(diff / DAY);}
/** * Returns the number of the day in the year in UTC time. * * @param date Date to get the day of the year of. * @return Number of the day in the year in UTC time. * * @example * ```ts * import { dayOfYearUtc } from "https://deno.land/std@$STD_VERSION/datetime/day_of_year.ts"; * * dayOfYearUtc(new Date("2019-03-11T03:24:00.000Z")) // 70 * ``` */export function dayOfYearUtc(date: Date): number { // Values from 0 to 99 map to the years 1900 to 1999. All other values are the actual year. (https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Date/Date) // Using setUTCFullYear as a workaround
const yearStart = new Date(date);
yearStart.setUTCFullYear(date.getUTCFullYear(), 0, 0); const diff = date.getTime() - yearStart.getTime();
return Math.floor(diff / DAY);}
std

Version Info

Tagged at
3 weeks ago