JSFiddle - React, Tailwind, and code Playground

by Cale Bergh

HTML

<input type="text" name="test" id="someid" class="numbers-only">

JavaScript

jQuery(function($) {
  $(".numbers-only").on("keyup blur", function() {
    $(this).val($(this).val().replace(/[^a-z]/ig, ''));
  });
});