Question

106

regular expression to match exactly 5 digits

rated 0 times [ 107] [ 1] / answers: 1 / hits: 151724 / 14 Years ago, sat, february 12, 2011, 12:00:00

testing= testing.match(/(d{5})/g);

I'm reading a full html into variable. From the variable, want to grab out all numbers with the pattern of exactly 5 digits. No need to care of whether before/after this digit having other type of words. Just want to make sure whatever that is 5 digit numbers been grabbed out.

However, when I apply it, it not only pull out number with exactly 5 digit, number with more than 5 digits also retrieved...

I had tried putting ^ in front and $ behind, but it making result come out as null.

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answered 14 Years ago makaylahk · Accepted Answer

I am reading a text file and want to use regex below to pull out numbers with exactly 5 digit, ignoring alphabets.

Try this...

var str = 'f 34 545 323 12345 54321 123456',

    matches = str.match(/bd{5}b/g);



console.log(matches); // ["12345", "54321"]

jsFiddle.

The word boundary b is your friend here.

Update

My regex will get a number like this 12345, but not like a12345. The other answers provide great regexes if you require the latter.