javascript - 计算时差|字符串

Question

这个问题已经有答案了:

JavaScript - Get minutes between two dates (13 个回答)

How can I compare two time strings in the format HH:MM:SS? (17 个回答)

已关闭 6 年前。

我想显示计划时间和预期时间之间的分钟数。

这不是比较，这是计算预定时间和预期时间在不同时间有多少分钟。

由于两次都显示为字符串，是否需要将字符串转换为数字然后进行比较？

我想要返回的只是时间差的数字。

这是我的对象:

{
station: "Macclesfield",
scheduled: "15:41",
expected: "15:50",
platform: "1"
}

Answer 1

var data = {
  station: "Macclesfield",
  scheduled: "15:41",
  expected: "15:50",
  platform: "1"
}

function getTimeDifference(scheduled, expected) {
  scheduled = scheduled.split(':'); //get array [hours, minutes]
  expected = expected.split(':');
  var hours = expected[0] - scheduled[0]; //difference in hours
  var minutes = expected[1] - scheduled[1]; //difference in minutes
  if (minutes < 0) { //if minutes are negative we know it wasn't a full hour so..
    hours--; //subtract an hour
    minutes += 60; //add 60 minutes
  } //now we're ok
  if (hours) //if hours has a value
    return hours + ':' + minutes;
  return minutes; //hours is 0 so we only need the minutes
}

console.log(getTimeDifference(data.scheduled, data.expected));

data.expected = "16:00";

console.log(getTimeDifference(data.scheduled, data.expected));

data.expected = "17:00";

console.log(getTimeDifference(data.scheduled, data.expected));