如何在javascript中比较时间？

我有两次格式“HH：MM”我想比较它们我有以下代码来获取我的格式的时间：

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;

这段代码是为了在减去GMT差异后得到时间：

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');
}

如何将这些值作为字符串的时间进行比较？

解决方法

使用Date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(18,0); // 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");
}