I need help in creating regex for JavaScript where minimum 10 digit number is allowed and maximum 15. It may optionally have "+" at the start only

Question

I want to create regex for use in JavaScript where minimum 10 digit number is only allowed and maximum 15 digit. It may optionally have "+" at the start only and not at any other places.

score 0 · Accepted Answer · answered Apr 23 '20 at 17:25

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You can use the following expression

^\+?\d{10,15}$

See a demo on regex101.com.

answered Apr 23 '20 at 17:25

Jan

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score 0 · Answer 2 · edited Apr 23 '20 at 19:46

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I believe this can do the work

var patt = new RegExp("^([+]([0-9]){10,15}$)|^(([0-9]){10,15})$");

edited Apr 23 '20 at 19:46

Wiktor Stribiżew

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answered Apr 23 '20 at 17:34

bruce lui

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@esqew Actually, the solution works, it was formatted poorly. – Wiktor Stribiżew Apr 23 '20 at 19:47
@WiktorStribiżew seems my comment is a bit misleading after your edit - the `+` token in v1 of this answer would have thrown an error. – esqew Apr 23 '20 at 19:55
@esqew It was like this all the time, my edit was fixing the formatting, I just added a newline and 4 spaces before `patt`, see [history](https://stackoverflow.com/posts/61393504/edit/baf89752-09cc-4b49-8f3c-fcef2ac50b58) – Wiktor Stribiżew Apr 23 '20 at 20:01
@WiktorStribiżew Right - my mistake. I've deleted my original comment and rescinded my downvote as such. – esqew Apr 23 '20 at 20:04

I need help in creating regex for JavaScript where minimum 10 digit number is allowed and maximum 15. It may optionally have "+" at the start only

2 Answers2