I have a string which is bination of letters and digits. For my application I have to separate a string with letters and digits: ex:If my string is "12jan" i hav to get "12" "jan" seperately..

I have a string which is bination of letters and digits. For my application I have to separate a string with letters and digits: ex:If my string is "12jan" i hav to get "12" "jan" seperately..

• javascript

Share Improve this question Follow edited Nov 30, 2010 at 7:10 karim79 343k6767 gold badges419419 silver badges407407 bronze badges asked Nov 30, 2010 at 7:03 sandeepsandeep 2,89299 gold badges4747 silver badges5656 bronze badges 1

• 4 didnt you just ask this question? look for the answers there you can use the same regular expressions with some minor modification and it will work with javascript aswell stackoverflow./questions/4311156/… – Breezer Commented Nov 30, 2010 at 7:05

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2 Answers 2

Sorted by: Reset to default 7

You can always do this if str is your string:

var digits = str.replace(/\D/g, ""),
    letters = str.replace(/[^a-z]/gi, "");   

Essentially, what this code does is replace all of the characters that you do not want with the empty string.

\D and [^a-z] are character classes that represent, respectively, all the non-digits and all the non-letters. The g at the end of the two expressions makes them replace all occurrences of the pattern. The i make it case-insensitive, keeping both lower and upper case letters.

Well for the example you gave I would try

parseInt(num)

so if you had parseInt(12Jan); you should get 12.

I am not an expert so I hope this helps.