JSFiddle - React, Tailwind, and code Playground

HTML

<input>

JavaScript

$('input').keypress(function(e){
    console.log(e.keyCode);
    console.log($(this).val());
    if ((e.keyCode === 65 || e.keyCode === 97)  && $(this).val().match('/a/i')) console.log('cancel');
})