Regex for comma separated numbers within specific range

Question

I need regex that validated the comma separated numbers with min and max number limit. i tried this regex but no luck

^(45|[1-9][0-5]?)$

i want the list like this one (min number is 1 and max number is 45)

23,45,3,7,1,9,34

http://stackoverflow.com/questions/7944065/regex-for-javascript-validation-of-comma-separated-numbers or http://stackoverflow.com/questions/16620980/comma-separated-numbers-regex or http://stackoverflow.com/questions/17960858/regex-javascript-numbers-comma-separated — Xotic750, Nov 04 '15 at 15:10

Casimir et Hippolyte · Answer 1 · 2015-11-04T13:19:48.940

2

It isn't a job for regex (regex are not handy with numbers, imagine the same with a more complicated range like (247,69352) that needs to build a giant pattern). So my advice is to split your string and then to check your items one by one.

A way without regex:

function numsInRange(s, min, max) {
    var items = s.split(',');
    for (var i in items) {
        var num = parseInt(items[i], 10);
        if (num != items[i] || num < min || num > max)
            return false;
    }
    return true;
}

var s='23,45,3,7,1,9,34';

console.log(numsInRange(s, 1, 45)); // true
console.log(numsInRange(s, 1, 44)); // false

demo

edited Nov 04 '15 at 13:19

answered Nov 04 '15 at 13:09

Casimir et Hippolyte

88,009
5
94
125

http://stackoverflow.com/questions/500504/why-is-using-for-in-with-array-iteration-such-a-bad-idea – Xotic750 Nov 04 '15 at 13:50

score 1 · Answer 2 · answered Nov 04 '15 at 13:07

1

This regex will do the job:

\b(([1-3][0-9])|(4[0-5])|[1-9])\b

answered Nov 04 '15 at 13:07

Conrado Costa

434
2
12

Xotic750 · Answer 3 · 2015-12-11T03:04:16.113

I would be tempted to use a combination of regex (depending on need) and array iterators (not for..in enumeration) (ES5 in example)

var reIsPattern = /^[+\-]?(?:0|[1-9]\d*)$/;

function areNumsInRange(commaString, min, max) {
  return commaString.split(',')
    .map(Function.prototype.call, String.prototype.trim)
    .every(function(item) {
      return reIsPattern.test(item) && item >= min && item <= max
    });
}

var s = '23,45,3,7,1,9,34';

document.body.textContent = areNumsInRange(s, 1, 45);

Or perhaps just simply

function areNumsInRange(commaString, min, max) {
  return commaString.split(',').every(function(item) {
    var num = Number(item);
    return num >= min && num <= max;
  });
}

var s = '23,45,3,7,1,9,34';

document.body.textContent = areNumsInRange(s, 1, 45);

Regex for comma separated numbers within specific range

3 Answers3