javascript - 如何比较javascript中的时间？

Question

我有两次格式为“HH:MM”的时间我想比较它们我有以下代码以我的格式获取现在的时间:

current_time = new Date();
hour = current_time.getHours();
minute = current_time.getMinutes();
if(hour<10){hour='0'+hour} if(minute<10){minute='0'+minute}
my_time = hour+':'+minute;

而这段代码是减去GMT时差得到时间:

d = new Date()
var n = d.getTimezoneOffset();
var n1 = Math.abs(n);
var difference = (n1/60); 
my_time = my_time - (0+difference);

现在应该将 my_time 的值与 match_time 的值进行比较:

match_time = 10:00;//for example
if(my_time > match_time)
{
  alert('yes');
}
else
{
  alert('No');
}

当它们是字符串时，我如何将这些值与时间进行比较？？？

Answer 1

使用日期对象。 Date.setHours()允许您指定小时、分钟、秒

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");
}