Compare Time returned in string format by converting it to 24 hour format in javascript

Question

I am making an ajax call and getting a JSON response. In the response I am getting time in following format:

12:00 pm //typeof of this is String.

I need to compare this time with the other times returned and find the earliest time.

What would be the best way of doing this? I was thinking of converting it to 24 Hour format in int and then directly compare, but how can we convert this to 24 hour format in the best way?

cut off `am/pm` part, split remaining string into `hours/minutes`, if PM add 12 to `hours`, do `hours*60+minutes`, compare (don't forget 24=00)... that's it — Wh1T3h4Ck5, Jul 27 '17 at 11:07

score -2 · Answer 1 · answered Jul 27 '17 at 11:07

-2

Try this:

import java.text.SimpleDateFormat;
import java.util.Date;

public class Main {
   public static void main(String [] args) throws Exception {
       SimpleDateFormat displayFormat = new SimpleDateFormat("HH:mm");
       SimpleDateFormat parseFormat = new SimpleDateFormat("hh:mm a");
       Date date = parseFormat.parse("12:00 PM");
       System.out.println(parseFormat.format(date) + " = " + displayFormat.format(date));
   }
}

That is what it prints:

12:00 PM = 00:00

answered Jul 27 '17 at 11:07

Fotis Grigorakis

363
1
3
16

You sure this is **JavaScript**? – Wh1T3h4Ck5 Jul 27 '17 at 11:11
Of course not. He didn't say anything about JavaScript. But even with i wrote he can write this in a class or even in a servlet and then to send in the JavaScript file. But if he wanted to do this in JavaScript it has surely easier ways. – Fotis Grigorakis Jul 27 '17 at 11:13
3

Look at tags, below question ;) Also, mentioned JSON - **J**ava**S**cript **O**bject **N**otation. – Wh1T3h4Ck5 Jul 27 '17 at 11:15
1

You are right. My fault – Fotis Grigorakis Jul 27 '17 at 11:16
2

You need to delete this since it doesn't answer the question. – Rob Jul 27 '17 at 13:10

Compare Time returned in string format by converting it to 24 hour format in javascript

1 Answers1