JSFiddle - React, Tailwind, and code Playground

by GustavoSatheler

HTML

<script src="https://code.jquery.com/jquery-1.11.3.js"></script>
<input id="txt" type="text" />

JavaScript

$(document).ready(function() {
  $("#txt").keydown(function(event) {
    // Permite somente Delete, Backspace, Period, Seta para direita e esquerda
    if (event.keyCode == 46 || event.keyCode == 8 || event.keyCode == 190 || event.keyCode == 37 || event.keyCode == 39) {
   							 } else {
      // Ensure that it is a number and stop the keypress
      if ((event.keyCode < 48 || event.keyCode > 57) && (event.keyCode < 96 || event.keyCode > 105)) {
        event.preventDefault();
      }
    }
  });
});