Remove Number with Regex

Question

i want to remove number at beginning and the end of word in one sentence for example:

"123helo helo123"

then it will return

"helo helo"

I've tried this pattern:

/^[0-9]|[0-9]$/

but it just recognized them as one string but not in words. Can you help me?

try grouping the two parts you are OR'ing with brackets like so /(^[0-9])|([0-9]$)/ — Dziugas, Jun 21 '16 at 03:36
*"beginning and the end **of word**"* ~ this caught my attention. What should happen for "123helo 123helo"? — Phil, Jun 21 '16 at 03:44
Same as removing leading/trailing whitespace. replace the space with the number. — epascarello, Jun 21 '16 at 03:51

Phil · Accepted Answer · 2016-06-21T03:53:47.750

2

To answer your question, including specifically where you mention "at beginning and the end of word", this should suffice

str.replace(/\b\d+|\d+\b/g, '')

\b is the word-boundary character. The above removes all numbers directly after or directly before a word-boundary.

edited Jun 21 '16 at 03:53

answered Jun 21 '16 at 03:46

Phil

new to gerexs what is the `|` in between doing ? – Alexander Solonik Jun 21 '16 at 11:36
Think of it like "or". – Phil Jun 21 '16 at 21:16

score 0 · Answer 2 · edited May 23 '17 at 10:29

0

Try /^\d*(.*)\d*$/ and match capture group 1. Look here to see how to use capture groups.

edited May 23 '17 at 10:29

Community

answered Jun 21 '16 at 03:39

Ken Clement

Use `\d+` instead of `\d*` if you want to exclude the possibility that a number is omitted. – Ken Clement Jun 21 '16 at 03:40
This removes the digits at the beginning and end of the sentence (string), not each word. – Jun 21 '16 at 04:33

Sergey Khalitov · Answer 3 · 2016-06-21T03:49:30.110

-1

PHP solution:

$string = '123helo helo123';
$result = preg_replace('/^\d+|\d+$/', '', $string);
echo $result; // helo helo

Javascript solution:

var string = '123helo helo123';
var result = string.replace(/^\d+|\d+$/g, '');
console.log(result); // helo helo

Or this RegExp for triming each word in 123hello hello123 123hello

/\b\d+|\d+\b/

edited Jun 21 '16 at 03:49

answered Jun 21 '16 at 03:42

Sergey Khalitov

thank you for your help :) but what if I modified the string to 'abc 123helo helo123 abc' ? I was so curious – jill182 Jun 21 '16 at 03:54
@brownie `'abc 123helo helo123 abc'.replace(/\b\d+|\d+\b/g,'')` will return `abc helo helo abc` in JavaScript. – Sergey Khalitov Jun 21 '16 at 03:56

3 Answers3