Javascript RegEx: Get 1 or 2 digits after a symbol (Excluding that symbol)

Question

Thanks in advance for taking a look at this. I'm having some difficulty extracting something to create a sports project. I've got the following situation:

lastName, firstName #33 6

Which works fine with the following:

var number = $(this).text().match(/\d{1,2}/);

But, if I use it for the following (missing the number) than it's grabbing the 6, because obviously I am searching for one or two digits.

lastName, firstName # 6

Basically what I'm trying to do is pull in a one or two digit number after the number sign (if there is one) but ignore anything that comes after it and before it (# included). I'm not extremely handy with RegEx so hopefully one of you are able to understand what I mean by this.

You mean like this? `#\d*` You can cut out he `#`afterwards. — John, Apr 03 '16 at 22:32
It's a shame Javascript doesn't allow look-behinds - `(?<!#)\d+` would work perfectly. — PJSCopeland, Apr 04 '16 at 01:02

score 0 · Answer 1 · edited May 23 '17 at 12:24

0

Try: #(\d{1,2})

You can use capture groups in JS (from here)

var myString = "something format_abc";
var myRegexp = /(?:^|\s)format_(.*?)(?:\s|$)/g;
var match = myRegexp.exec(myString);
alert(match[1]);

To allow spaces between # and number: #\s*(\d{1,2})

\s* will catch all the spaces.

edited May 23 '17 at 12:24

Community

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answered Apr 03 '16 at 22:44

Laurel

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Thanks for the response. That will still catch the 6, no? I probably could have worded my question better, but I'm trying to capture only numbers directly after the #, so like the 33 in my first example. I'm trying to ignore the 6 in the second example because it doesn't come directly after the #. – mike112 Apr 03 '16 at 22:54

score 0 · Answer 2 · answered Apr 03 '16 at 23:06

There seems to be no leading 0 possible, so I added that restriction and also the number has to be followed by a whitespace or it has to be a the end.

var re = /#\s*([1-9][0-9]?)(?:\s|$)/;
var matches = [];
var str = '...';
while ((match = re.exec(str)) != null) {
    matches.push(match[1]);
}

Javascript RegEx: Get 1 or 2 digits after a symbol (Excluding that symbol)

2 Answers2