regular expression to find DD Month YYYY from a string

Question

I have a string Born (1970-07-30) 30 July 1970 (age 43) London, UK

I need to get the sub string 30 July 1970 from this. Like wise for any month, ie. the DOB may only change .

Can any one please help me with a regular expression for this ?

possible duplicate of [Regular Expression to match valid dates](http://stackoverflow.com/questions/51224/regular-expression-to-match-valid-dates) — PW Kad, Aug 14 '13 at 13:12
Always how what you have tried as this will help you in learning from self and best result for long term. :) — Incredible, Aug 14 '13 at 13:17

score 4 · Answer 1 · edited Feb 08 '17 at 14:43

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var string = "Born (1970-07-30) 30 July 1970 (age 43) London, UK";

var pattern = /\s(\d{1,2}\s[a-zA-Z]+\s\d{4})\s/

//fetch all matches back into an array
var result = string.match(pattern);

alert(result[1]);

Example on jsFiddle

Regular expression visualization

Edit live on Debuggex

Hope this helps.

edited Feb 08 '17 at 14:43

Community

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answered Aug 14 '13 at 13:15

Jake Aitchison

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musefan · Answer 2 · 2013-08-19T08:44:46.140

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I wouldn't bother with regex, there is a common enough pattern to just pull it apart...

var string = "Born (1970-07-30) 30 July 1970 (age 43) London, UK";
string = string.substring(string.indexOf(")") + 1);//" 30 July 1970 (age 43) London, UK"
string = string.substring(0, string.indexOf("("));//" 30 July 1970 "
string = string.trim();//"30 July 1970"
//string = "30 July 1970"

edited Aug 19 '13 at 08:44

answered Aug 14 '13 at 13:15

musefan

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there is a potential here that the number of spaces might change after the `(` and or before the `)`. "potentially" anyway :D – Jake Aitchison Aug 14 '13 at 13:27

score 1 · Answer 3 · answered Aug 14 '13 at 13:14

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If they're always formatted like this you don't need a regular expression. You can use split and slice.

var textDate = yourString.split(' ').slice(2, 5).join(' ');

answered Aug 14 '13 at 13:14

Bill Criswell

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much better than mine ;-) – musefan Aug 14 '13 at 13:16
Actually, [mine is faster](http://jsperf.com/slice-vs-substring-123) – musefan Aug 14 '13 at 13:21
@musefan how fast is it compared with the regex? do you have any perf data? – Jake Aitchison Aug 14 '13 at 13:23
I think he's updating the test now. Just ran it and got an error. I'm curious about the results as well. – Bill Criswell Aug 14 '13 at 13:26
@milkshake: trying to do that now but it complain about your code, cant see why as I used your JS fiddle code which obvs works – musefan Aug 14 '13 at 13:26
@milkshake: Seems to work when using `result[0]`... [the test has been updated](http://jsperf.com/slice-vs-substring-123) - I still win! – musefan Aug 14 '13 at 13:36
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I wonder what he's going to do with ALL that extra time he saves. =p – Bill Criswell Aug 14 '13 at 13:38
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Build a house or paint a self portrait? – musefan Aug 14 '13 at 13:39
@musefan very good :D – Jake Aitchison Aug 14 '13 at 13:43

regular expression to find DD Month YYYY from a string

3 Answers3