split javascript string using a regexp to separate numbers from other characters

Question

so for example:

"10.cm" ...becomes... [10,".cm"] or ["10",".cm"], either will do as I can work with a string once it's split up.

i tried

"10.cm".split(/[0-9]/|/[abc]/)

but it seems that i don't have such a great understanding of using regexp's

thanks

either will do as i can work with a string once it's split up — treeseal7
– treeseal7, Commented Dec 2, 2016 at 14:10
is it always the same character the string needs to be splitted at? — XtremeBaumer
– XtremeBaumer, Commented Dec 2, 2016 at 14:11

Wiktor Stribiżew · Accepted Answer · 2016-12-02 14:11:58Z

4

You may tokenize the string into digits and non-digits with /\d+|\D+/g regex:

var s = "10.cm";
console.log(s.match(/\d+|\D+/g));

Details:

\d+ - matches 1 or more digits
| - or
\D+ - matches 1 or more characters other than digits.

answered Dec 2, 2016 at 14:11

Wiktor Stribiżew

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4 Comments

Mark Adelsberger Over a year ago

Nice; I got lost in the details, trying to figure out how to make split do the job (which it almost can, but not with javascript regex), and didn't think about just using match instead...

Wiktor Stribiżew Over a year ago

When you need to split so as to keep all the characters there are in the string, matching is most likely what you need. Not always, but in this case, matching is really easier.

treeseal7 Over a year ago

how would i write it if i just wanted to keep the decimal with the numbers so "10.10cm" became ["10.10", "cm"]?

Wiktor Stribiżew Over a year ago

There are so many float regexps around here, here is a version I like most /\d*\.?\d+|\D+/g

Sefa_Kurtuldu · Accepted Answer · 2023-01-20 13:06:54Z

0

/\W/ Matches any non-word character. This includes spaces and punctuation, but not underscores. In this solution can be used /\W/ with split and join methods. You can separate numbers from other characters.

let s = "10.cm";
console.log(s.split(/\W/).join(" "));

output = 10 cm

answered Jan 20, 2023 at 13:06

Sefa_Kurtuldu

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