如何比较javascript中的时间？ [英] How to compare time in javascript?

问题描述

我有两次格式为HH：MM，我想比较他们，我有以下代码以现在的格式获得：

  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; 
  

此代码是在减去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 +差异）; 
  

现在my_time的值应该与match_time的值进行比较：

  match_time = 10:00; //例如
 if（my_time> match_time）
 {
 alert（'是'）; 
} 
 else 
 {
 alert（'否'）; 
} 
  

我们如何将这些值作为一个字符串的时间进行比较？

解决方案

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（18,30,0）; // 6.30 pm 
 
 console.log（happy hour？）
 if（currentD> = startHappyHourD& amp;& currentD< endHappyHourD）{
 console.log （是！）; 
} else {
 console.log（no，sorry！between 5.30 pm and 6.30pm）; 
} 
  

I have two time in the format "HH:MM" i want to compare them i have the following code to get the time of now in my format:

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;

And this code is to get the time after subtracting the GMT difference :

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

Now the value of my_time should be compared with the value of match_time:

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

how can I compare those values as time when they are a string ???

解决方案

use Date objects. Date.setHours() allows you to specify hour, minutes, seconds

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");
}

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