Split a number from a string in JavaScript

Question

I'd like to split strings like

'foofo21' 'bar432' 'foobar12345'

into

['foofo', '21'] ['bar', '432'] ['foobar', '12345']

Is there an easy and simple way to do this in JavaScript?

Note that the string part (for example, foofo can be in Korean instead of English).

@AvinashRaj sorry i could not find the exactly same q&a, and I'm not really familiar with Javascript :( — Bossam, Mar 16 '17 at 07:41
@WiktorStribiżew string always comes first and the number second, without space as delimiter. — Bossam, Mar 16 '17 at 07:42
Then you need to use a regex-based `split` with a positive lookahead with a digit matching pattern. — Wiktor Stribiżew, Mar 16 '17 at 07:46

score 40 · Answer 1 · edited Aug 19 '20 at 11:19

40

Second solution:

var num = "'foofo21".match(/\d+/g);
// num[0] will be 21

var letr =  "foofo21".match(/[a-zA-Z]+/g);
/* letr[0] will be foofo.
   Now both are separated, and you can make any string as you like. */

edited Aug 19 '20 at 11:19

Peter Mortensen

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answered Mar 16 '17 at 07:58

RajeshP

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score 17 · Answer 2 · edited Aug 19 '20 at 11:28

17

You want a very basic regular expression, (\d+). This will match only digits.

whole_string="lasd行書繁1234"
split_string = whole_string.split(/(\d+)/)
console.log("Text:" + split_string[0] + " & Number:" + split_string[1])

edited Aug 19 '20 at 11:28

Peter Mortensen

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answered Mar 16 '17 at 08:00

BioGenX

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Perfect one-liner. This should be the accepted answer. – novato Jan 10 '23 at 10:18

score 13 · Accepted Answer · edited Oct 23 '22 at 17:51

Check this sample code

var inputText = "'foofo21' 'bar432' 'foobar12345'";
function processText(inputText) {
        var output = [];
        var json = inputText.split(' '); // Split text by spaces into array

        json.forEach(function (item) { // Loop through each array item
            var out = item.replace(/\'/g,''); // Remove all single quote '  from chunk
                out = out.split(/(\d+)/); // Now again split the chunk by Digits into array
                out = out.filter(Boolean); // With Boolean we can filter out False Boolean Values like -> false, null, 0 
                output.push(out);
        });
            
        return output;
}

var inputText = "'foofo21' 'bar432' 'foobar12345'";

var outputArray = processText(inputText);

console.log(outputArray); Print outputArray on console 

console.log(JSON.stringify(outputArray); Convert outputArray into JSON String and print on console

An explanation would be in order. – Peter Mortensen Aug 19 '20 at 11:29 — Peter Mortensen, Aug 19 '20 at 11:29
@Vindhyachal Kuma why we need item.replace(/\'/g, '') – Exploring Aug 20 '21 at 04:11 — Exploring, Aug 20 '21 at 04:11
to remove all single quote from string – Vindhyachal Kumar Aug 20 '21 at 09:31 — Vindhyachal Kumar, Aug 20 '21 at 09:31

Split a number from a string in JavaScript

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