使用javascript将12小时时间格式转换为24小时格式

Question

我的时间格式为“07:30 PM”。我需要使用javascript转换为24小时格式进行进一步计算。请协助我这样做。

Answer 1

重复 this

简单的解决方案：

function ampmTo24(time)
{
  var hours = Number(time.match(/^(\d+)/)[1]);
  var minutes = Number(time.match(/:(\d+)/)[1]);
  var AP = time.match(/\s(.*)$/);
  if (!AP) AP = time.slice(-2);
  else AP=AP[1];
  if(AP == "PM" && hours<12) hours = hours+12;
  if(AP == "AM" && hours==12) hours = hours-12;
  var Hours24 = hours.toString();
  var Minutes24 = minutes.toString();
  if(hours<10) Hours24 = "0" + Hours24;
  if(minutes<10) Minutes24 = "0" + Minutes24;

  return Hours24 + ":" + Minutes24
}