Do you have a pretty date?

John Resig has created a little script to give you pretty dates that Web 2.0 know and love (thanks Rails):

PLAIN TEXT

JAVASCRIPT:

1.  
2. prettyDate(“2008-01-28T20:24:17Z”) // => "2 hours ago"
3. prettyDate(“2008-01-27T22:24:17Z”) // => "Yesterday"
4. prettyDate(“2008-01-26T22:24:17Z”) // => "2 days ago"
5. prettyDate(“2008-01-14T22:24:17Z”) // => "2 weeks ago"
6.  

The library is short and sweet:

PLAIN TEXT

JAVASCRIPT:

1.  
2. /*
3. * JavaScript Pretty Date
4. * Copyright (c) 2008 John Resig (jquery.com)
5. * Licensed under the MIT license.
6. */
7.  
8. // Takes an ISO time and returns a string representing how
9. // long ago the date represents.
10. function prettyDate(time){
11.         var date = new Date((time || “”).replace(/-/g,“/”).replace(/[TZ]/g,” “)),
12.                 diff = (((new Date()).getTime() – date.getTime()) / 1000),
13.                 day_diff = Math.floor(diff / 86400);
14.                        
15.         if ( isNaN(day_diff) || day_diff <0 || day_diff>= 31 )
16.                 return;
17.                        
18.         return day_diff == 0 && (
19.                         diff <60 && “just now” ||
20.                         diff <120 && “1 minute ago” ||
21.                         diff <3600 && Math.floor( diff / 60 ) + ” minutes ago” ||
22.                         diff <7200 && “1 hour ago” ||
23.                         diff <86400 && Math.floor( diff / 3600 ) + ” hours ago”) ||
24.                 day_diff == 1 && “Yesterday” ||
25.                 day_diff <7 && day_diff + ” days ago” ||
26.                 day_diff <31 && Math.ceil( day_diff / 7 ) + ” weeks ago”;
27. }
28.  

(Via Ajaxian.)