JSFiddle - React, Tailwind, and code Playground

by Robert Graham

HTML

<div id="d"></div>

JavaScript

var pat = /^[0-9]$|^1[0-9]$|^2[0-5]$/;


for (var i = 0; i < 27; i++)
    document.getElementById('d').innerHTML += i + ': ' + pat.test(i) + '<br />';