JS中日期的日期名称

Question

我需要显示一个日期的名称(如"05/23/2014"),这是我从第三方获得的.

我尝试过使用Date,但我只得到了约会.

获取当天名称的正确方法是什么？

Answer 1

Ahum,三年后......

为什么没有人使用标准javascript Date类提供的方法(Callum Linington除外)？

请参阅https://developer.mozilla.org/en/docs/Web/JavaScript/Reference/Global_Objects/Date/toLocaleDateString

从日期获取日期名称:

function getDayName(dateStr, locale)
{
    var date = new Date(dateStr);
    return date.toLocaleDateString(locale, { weekday: 'long' });        
}

var dateStr = '05/23/2014';
var day = getDayName(dateStr, "nl-NL"); // Gives back 'Vrijdag' which is Dutch for Friday.

在阵列中获取所有工作日:

function getWeekDays(locale)
{
    var baseDate = new Date(Date.UTC(2017, 0, 2)); // just a Monday
    var weekDays = [];
    for(i = 0; i < 7; i++)
    {       
        weekDays.push(baseDate.toLocaleDateString(locale, { weekday: 'long' }));
        baseDate.setDate(baseDate.getDate() + 1);       
    }
    return weekDays;
}

var weekDays = getWeekDays('nl-NL'); // Gives back { 'maandag', 'dinsdag', 'woensdag', 'donderdag', 'vrijdag', 'zaterdag', 'zondag'} which are the days of the week in Dutch.

对于美国日期,请使用"en-US"作为区域设置.

Answer 2

您可以使用该Date.getDay()方法,该方法在周日返回0,在星期六返回6.因此,您只需创建一个带有日期名称名称的数组:

var days = ['Sunday', 'Monday', 'Tuesday', 'Wednesday', 'Thursday', 'Friday', 'Saturday'];
var d = new Date(dateString);
var dayName = days[d.getDay()];

这dateString是您从第三方API收到的字符串.

或者,如果您想要日期名称的前3个字母,则可以使用Date对象的内置toString方法:

var d = new Date(dateString);
var dayName = d.toString().split(' ')[0];

这将取d.toString()输出中的第一个单词,即3个字母的日期名称.

Answer 3

使用 Date.toLocaleString() 方法：

new Date(dateString).toLocaleString('en-us', {weekday:'long'})

Answer 4

let weekday = ['Sun', 'Mon', 'Tue', 'Wed', 'Thu', 'Fri', 'Sat'][new Date().getDay()]

Answer 5

要获取任何给定日期的日期，只需将日期传递到新的 Date 对象中即可：

let date = new Date("01/05/2020");
let day = date.toLocaleString('en-us', {weekday: 'long'});
console.log(day);
// expected result = tuesday

要了解更多信息，请访问 mdn-date.prototype.toLocaleString()( https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Date/toLocaleString )

Answer 6

var days = [
    "Sunday",
    "Monday",
    "...", //etc
    "Saturday"
];

console.log(days[new Date().getDay()]);

很简单,请阅读JavaScript手册中的Date对象

要使用日期做其他事情,比如从中获取可读字符串,我使用:

var d = new Date();
d.toLocaleString();

如果您只想要时间或日期使用:

d.toLocaleTimeString();
d.toLocaleDateString();

您可以通过执行以下操作来解析日期:

var d = new Date(dateToParse);

要么

var d = Date.parse(dateToParse);

Answer 7

看看这个 ：

var event = new Date(Date.UTC(2012, 11, 20, 3, 0, 0));

var options = { weekday: 'long', year: 'numeric', month: 'long', day: 'numeric' };

console.log(event.toLocaleDateString('de-DE', options));
// expected output: Donnerstag, 20. Dezember 2012

console.log(event.toLocaleDateString('ar-EG', options));
// expected output: ??????? ?? ??????? ????

console.log(event.toLocaleDateString('ko-KR', options));
// expected output: 2012? 12? 20? ???

来源：Mozilla 文档

Answer 8

一行解决方案：

let day = ["sunday","monday","tuesday","wednesday","thursday","friday","saturday"][new Date().getDay()]

Answer 9

let weekday = new Date(dateString).toLocaleString('en-us', {weekday:'long'});
console.log('Weekday',weekday);