How to split a string when first letter is found in JavaScript?

Question

If i have:

var x = "123442234535asd";

What regular expression would I have to use on x.split(regex); to get "asd"?

PS: x would always have a random string of numbers first and a string of letters after.

And why not just remove the numbers, x.replace(/\d/g,'');

adeneo
– adeneo

2015-04-18 22:38:11 +00:00
Commented Apr 18, 2015 at 22:38 — adeneo
– adeneo, Commented Apr 18, 2015 at 22:38
Couldn't you just match [a-zA-Z]+?

BlackVegetable
– BlackVegetable

2015-04-18 22:38:52 +00:00
Commented Apr 18, 2015 at 22:38 — BlackVegetable
– BlackVegetable, Commented Apr 18, 2015 at 22:38

Pedro Lobito · Accepted Answer · 2015-04-18 22:47:11Z

2

You can simply remove the digits:

var x = "123442234535asd";
x = x.replace(/\d+/, "");
console.log(x);

output:

asd

CODEPEN DEMO

If you really need to split the string you can use:

var x = "123442234535asd";
x= x.split(/\d+/);

edited Apr 18, 2015 at 22:47

answered Apr 18, 2015 at 22:41

Pedro Lobito

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3 Comments

BlackVegetable Over a year ago

Wait, is the + after the digit matching shortcut needed there? I was thinking global g was what was needed, but it turns out here that either works.

Pedro Lobito Over a year ago

@VítorMartins, se a minha resposta te ajudou, por favor considera aceitá-la como a resposta correta, obrigado !

Vítor Martins Over a year ago

@Pedro Lobito , desculpa ainda não podia aceitar tinham que passar uns minutos, já aceitei, obrigado ;)

deowk · Accepted Answer · 2015-04-18 22:50:19Z

2

x.split(/[0-9]+/);

the last element in the array would be 'asd'

edited Apr 18, 2015 at 22:50

answered Apr 18, 2015 at 22:41

deowk

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1 Comment

deowk Over a year ago

yeah my bad, forgot about that...:)

Wiktor Stribiżew · Accepted Answer · 2015-04-18 22:54:16Z

1

If you want to split and only keep non-empty elements in the array that you get, use .filter(Boolean) after splitting:

var x = "123442234535asd";
alert(x.split(/[0-9]/g).filter(Boolean));

answered Apr 18, 2015 at 22:54

Wiktor Stribiżew

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