Desbloquear Campo pelo Checkbox

Desbloquear campo ao clicar no checkbox

by Rapha Souza

HTML

<input type="checkbox" id="Cpf" onchange="muda(this, 'CpfT');">
<input type="text" id="CpfT" disabled="true">

<input type="checkbox" id="RG" onchange="muda(this, 'RGT');">
<input type="text" id="RGT" disabled="true">

JavaScript

function muda(el, id) {
    document.getElementById(id).disabled = !el.checked;
}