JSFiddle - React, Tailwind, and code Playground

by elclanrs

HTML

<input>

JavaScript

$('input').keypress(function(e) {
    
    var A = /a/gi,
        letter = String.fromCharCode(e.which);
    
    if (A.test(letter)) {
        $(this).val(this.value.replace(A,''));
    }
});