JavaScript, split string on basis number

Question

const str = 'scsi15';

const words = str.split(/[0-15]*$/);

Code output: Array ["scsi", ""],

However, this is the output I want: Array ["scsi", "15"]

`[0-15]` will be the same as `[015]` it's not "zero to fifteen" — VLAZ, Mar 23 '20 at 07:29
Not quite. `[0-15]` means „Range 0 to 1 and the character 5”. That means, if it were `[0-25]` it would be equal to `[0125]` instead of `[025]`. — Ryuno-Ki, Mar 23 '20 at 07:35
Does this answer your question? [Javascript and regex: split string and keep the separator](https://stackoverflow.com/questions/12001953/javascript-and-regex-split-string-and-keep-the-separator) — jonrsharpe, Mar 23 '20 at 07:41
@Ryuno-Ki I was talking about *this* regex. The tange from zero to one includes zero *and* one only. — VLAZ, Mar 23 '20 at 07:41

score 0 · Answer 1 · answered Mar 23 '20 at 07:29

0

You could match by non digits or digits.

const
    str = 'scsi15',
    words = str.match(/\D+|\d+/g);

console.log(words);

answered Mar 23 '20 at 07:29

Nina Scholz

score 0 · Answer 2 · edited Mar 23 '20 at 07:35

0

One option would be to go via Regular Expression instead of String.prototype.split:

const str = 'scsi15';
const re = /([a-z]*)(\d*)/;
const words = re.exec(str);
// => ['scsi15', 'scsi', '15']

console.log(words)

edited Mar 23 '20 at 07:35

mplungjan

answered Mar 23 '20 at 07:33

Ryuno-Ki

mplungjan · Answer 3 · 2020-03-23T07:47:37.063

0

You can destruct regex capturing groups if the order is always the same

const str = 'scsi15';
const re = /(\D*)(\d*)/;
const [_, word, num] = re.exec(str); // _, is first item. Could be just ,
console.log(word, num)

edited Mar 23 '20 at 07:47

answered Mar 23 '20 at 07:38

mplungjan

`const [, word, num]` also works - you can skip the first identifier and not assign it. – VLAZ Mar 23 '20 at 07:41
3

@VLAZ I know, but I always explicit include it so it shows it is deliberately omitted and not a typo or somcething. – mplungjan Mar 23 '20 at 07:46

3 Answers3