JSFiddle - React, Tailwind, and code Playground

by CJ Ramki

HTML

<input class="input" maxlength="1" type="text" autocomplete="off"/>

JavaScript

$('.input').keyup(function () {
    if (!this.value.match(/[0-9]/)) {
        this.value = this.value.replace(/[^0-9]/g, '');
    }
});