使用 toLocaleString 將日期格式化為 MM/DD/YYYY

Question

在 JS 中，如何將日期格式化為 MM/DD/YYYY？

new Date(Date.now() + (8 * 86400000)).toLocaleString().split(',')[0])
returns "12/1/2020"

如何將其格式化為“12/01/2020”？

fromDate:
(new Date(Date.now() + (1 * 86400000)).toLocaleString().split(',')[0]),
toDate:
(newDate(Date.now() + (8 * 86400000)).toLocaleString().split(',')[0])

我希望 fromDate 和 toDate 為：

如果在 MST 下午 5:00 和午夜之間：將fromDate設置為tomorrow's日期，並將toDate為tomorrow's date + 7 days

如何比較 currentTime 是否大於當地時間下午 5 點？

let currentTime = new Date().toLocaleTimeString('en-US', {
  hour: '2-digit',
  minute: '2-digit',
  second: '2-digit',
  hour12: false
}); 
 

Answer 1

您可以使用.toLocaleString的options參數將日期格式化為“MM/DD/YYYY”

 var currentDate = new Date(Date.now() + (8 * 86400000)) var newDateOptions = { year: "numeric", month: "2-digit", day: "2-digit" } var newDate = currentDate.toLocaleString("en-US", newDateOptions ); console.log(newDate)

關於如何使用.toLocaleString的參數的詳細帖子 - https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Date/toLocaleString

Answer 2

這是來自這里的另一篇文章。

var currentD = new Date();
var startHappyHourD = new Date();
startHappyHourD.setHours(17,30,0); // 5.30 pm
var endHappyHourD = new Date();
endHappyHourD.setHours(18,30,0); // 6.30 pm

console.log("happy hour?")
if(currentD >= startHappyHourD && currentD < endHappyHourD ){
    console.log("yes!");
}else{
    console.log("no, sorry! between 5.30pm and 6.30pm");
}