使用toLocaleString将日期格式设置为MM/DD/YYYY

Question

在JS中，如何将日期格式化为MM/DD/YYYY？

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

如何将其格式化为"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是：

如果在美国东部时间下午5:00和午夜之间:将fromDate设置为tomorrow's date，将toDate设置为tomorrow's date + 7 days

如何比较currentTime来判断其是否大于当地时间下午5点？

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

Answer 1

您可以在.toLocaleString中使用options参数将日期格式化为"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)

​

有关如何在.toLocaleString - https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Date/toLocaleString中使用参数的详细帖子

Answer 2

这来自另一篇文章。

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");
}