JSFiddle - React, Tailwind, and code Playground

by Rob Sedgwick

HTML

<input name="number"/>

JavaScript

$(document).ready(function () {
    $('input[name="number"]').keyup(function (e) {
        if (/\D/g.test(this.value)) {
            // Filter non-digits from input value.
            this.value = this.value.replace(/\D/g, '');
        }
    });
});