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"

我如何将其格式化为"；2020年1月12日"；？

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为：

如果在下午5:00 MST和午夜之间：将fromDate设置为tomorrow's日期，将toDate设置为tomorrow's date + 7 days

如何比较currentTime来判断它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

您可以使用.toLocaleString中的options参数将日期设置为"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)

关于如何使用.toLocaleString-https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Date/toLocaleString

Answer 2

这来自这里的另一篇文章。

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");
}