JavaScript 日期

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var d = new Date();

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JavaScript 日期输出

默认情况下，JavaScript 将使用浏览器的时区并将日期显示为全文本字符串：

Tue Apr 02 2019 09:01:19 GMT+0800 (中国标准时间)

稍后，您将在本教程学到更多关于如何显示日期的知识。

创建 Date 对象

Date 对象由新的 Date() 构造函数创建。

有 4 种方法创建新的日期对象：

  • new Date()
  • new Date(year, month, day, hours, minutes, seconds, milliseconds)
  • new Date(milliseconds)
  • new Date(date string)

new Date()

new Date() Ƙirƙirin ɗan ƙashe ɗin ƙara ɗin ƙara da waktu ɗin yanzu da wuri:

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var d = new Date();

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Ƙasaɗaɗa ɗan ƙashe ƙasaɗaɗa. Waktu ɗin kompyuter ƙaɗaɗa ƙaɗaɗa, amma ɗan ƙashe ƙasaɗaɗa ɗakai.

new Date(year, month, ...)

new Date(year, month, ...) Ƙirƙirin ɗan ƙashe ɗin ƙara ɗin ƙara da sa'o': da wuri.

7 naɗi hanyan da ke ƙarfi, sa'o':, ɓangar ɓangar, da milisecond (a cikin wannan ƙarfin):

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var d = new Date(2018, 11, 24, 10, 33, 30, 0);

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Rarrabuwa：JavaScript ƙaɗaɗen 0 zuwa 11 bayan watan.

watan ɗin ƙwɗan shi 0. watan ɗin ƙarshen shi 11.

6 naɗi hanyan, watan, ɗin da ƙarfi, sa'o': da ɓangar ɓangar:

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var d = new Date(2018, 11, 24, 10, 33, 30);

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5 naɗi hanyan, watan, ɗin da ƙarfi da sa'o':

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var d = new Date(2018, 11, 24, 10, 33);

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4 naɗi hanyan, watan, ɗin da ƙarfi da sa'o':

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var d = new Date(2018, 11, 24, 10);

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3 naidaba za a kira shekaru, watan da kwanan.

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var d = new Date(2018, 11, 24);

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2 naidaba za a kira shekaru da watan.

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var d = new Date(2018, 11);

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An kai tsakiyar watan ba za a samu. Idan an ba da tsarin daya, zai kai tsakiyar milisegundu.

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var d = new Date(2018);

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Shekara ta da farko

Shekaru na farko da na biyu za a fassara su da 19xx.

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var d = new Date(99, 11, 24);

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var d = new Date(9, 11, 24);

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new Date(dateString)

new Date(dateString) Kafa kwanan mai farko daga kwanan da fassara:

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var d = new Date("October 13, 2014 11:13:00");

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Fassara kwanan na farko za a kira a babban nau'in.

JavaScript za a kammala kwanan daga milisegundu

JavaScript za a kammala kwanan daga 1970 shekara 1 watan Janairu 00:00:00 UTC (tafida al'umma duniya).

Wuri na yau ita ce 1970 shekara 1 watan Janairu 00:00:00 UTC.

Wuri na yau ita ce: 1554166879383 milisegundu daga 1970 shekara 1 watan Janairu.

new Date(milliseconds)

new Date(milliseconds) Kafa kwanan mai zamanin na milisegundu.

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var d = new Date(0);

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1970 shekara 1 watan Janairu cikin milisegundu 100 000 000 000 ita ce kimanin 1973 shekara 3 watan Mara:

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var d = new Date(100000000000);

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1970 shekara 1 watan Janairu cikin milisegundu 100 000 000 000 yana kai tsakiyar 1966 shekara 10 watan Nuwamba:

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var d = new Date(-100000000000);

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var d = new Date(86400000);

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Daya (24 wuri) ita ce 86 400 000 milisegundu.

Tattalin kanin kwanan

Duba kwarin da za a yiwa kwanan a kafa Date:Tattalin kanin kwananKwarin su.

Tattalin kanin kwanan za a yarda da sabonin kwanan na gida ko ma UTC (gaba ko GMT) a samun da kammala kwanan, shekaru, watan, awa, minitoci, sekuntoci da milisegundu na kwanan.

Tattalin kanin da sabonin kwanan da zamanin za a kira a babban nau'in.

Fassara din da kwanan

JavaScript (dakar da) za a fassara din da kwanan aroci:

Wed Mar 25 2015 08:00:00 GMT+0800 (Zhongguo zhungbiao shijian)

Zai HTML zhong xianshi riqi duixiang shi, hui shiyong toString() fangfa zidong zhuanhuan wei zifuhao.

Shili

d = new Date();
document.getElementById("demo").innerHTML = d;

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Dengyu:

d = new Date();
document.getElementById("demo").innerHTML = d.toString();

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toUTCString() Fangfa jiang riqi zhuanhuan wei UTC zifuhao (yi zhong riqi xianshi biaozhun).

Shili

var d = new Date();
document.getElementById("demo").innerHTML = d.toUTCString();

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toDateString() Fangfa jiang riqi zhuanhuan wei geng ruyi du de fuzhi

Shili

var d = new Date();
document.getElementById("demo").innerHTML = d.toDateString();

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