比较两个时间（hh：mm：ss）字符串 [英] Compare two time (hh:mm:ss) strings

问题描述

我在 hh：mm：ss 格式中有两个时间字符串。 （例如： 12:40:13 和 20:01:01 。）如何在JavaScript中比较这些？

I have two time strings in hh:mm:ss format. (eg: 12:40:13 and 20:01:01.) How can I compare these in JavaScript?

推荐答案

DEMO HERE

我更喜欢拥有日期对象，但正如其他地方所指出的，如果你想做简单的比较，你可以转换为秒

I prefer to have date objects, but as pointed out elsewhere, you can just convert to seconds if you want to do simple compares

function dateCompare(time1,time2) {
  var t1 = new Date();
  var parts = time1.split(":");
  t1.setHours(parts[0],parts[1],parts[2],0);
  var t2 = new Date();
  parts = time2.split(":");
  t2.setHours(parts[0],parts[1],parts[2],0);

  // returns 1 if greater, -1 if less and 0 if the same
  if (t1.getTime()>t2.getTime()) return 1;
  if (t1.getTime()<t2.getTime()) return -1;
  return 0;
}

alert(dateCompare("12:40:13","20:01:01"));

秒数：

function dateDiff(time1,time2) {
  var t1 = new Date();
  var parts = time1.split(":");
  t1.setHours(parts[0],parts[1],parts[2],0);
  var t2 = new Date();
  parts = time2.split(":");
  t2.setHours(parts[0],parts[1],parts[2],0);

  return parseInt(Math.abs(t1.getTime()-t2.getTime())/1000);
}

假设您有24小时和相同的填充，您可以进行简单的字符串比较

Assuming you have 24 hour times and same padding you can do simple string compare

 var t1 = "12:40:13", t2= "20:01:01";
 if (t1<t2) {
    console.log(t1," is < ", t2);
 }

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