JSFiddle - React, Tailwind, and code Playground

HTML

<input id="foo" value="banco de dados">

JavaScript

var keydown = function(e) {    
    var $this = $(this);
    var valor_antigo = $this.val();

    $this.off("keydown");
    $this.on("keydown", function(){
        return false;    
    });

    $this.on("keyup", function(evt) {
         $this.val(valor_antigo);
         $this.off("keyup");

         $this.off("keydown");
         $this.on("keydown", keydown);
    });    
};

$("#foo").on("keydown", keydown);