Dynamic Regex for min and max

Question

Need to validate an input using Regular expression

It should accept only digit
Min and max should be dynamic

Thanks for your help in advance

My code is

min=3, max=10

MyRegex is

/^(\d{min, max})$/

its not taking min and max as a variable instead its considering as value — Packeer Mydeen, May 10 '19 at 05:16

score 0 · Accepted Answer · answered May 10 '19 at 05:17

0

I'd use a template string:

let min = 2;
let max = 4;

let r = new RegExp(`^\\d{${min},${max}}$`);

[
 '2',
 '1',
 '10',
 'aos',
 '3333',
 '33',
].forEach(s => console.log("%s\t: %s", s, r.test(s)));

answered May 10 '19 at 05:17

Rafael

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score 0 · Answer 2 · answered May 10 '19 at 05:19

0

You can use template strings and RegExp constructor.

const test = (str,min,max) => new RegExp(`^\\d{${min},${max}}$`).test(str)
console.log(test('1234',2,4))

answered May 10 '19 at 05:19

Maheer Ali

32,967
5
31
51

Dynamic Regex for min and max

2 Answers2