Mostrar SELECT oculto al seleccionar valor en otro SELECT.

[Dniel]

Iniciado por IsaBelM

es lo mismo que tienes hasta ahora, pero agregando delante tanto parentNode como sea necesario

lee esto

¿Te refieres a lo siguiente?

Código HTML:

<form method="post" action="#">
    <table>
        <tr onchange="this.parentNode.parentNode.nextSibling.nextSibling.style.display='block'">
            <td>
                <select name="select1.1">
                    <option value=""></option>
                    <option value="select1.1Option1">1</option>
                    <option value="select1.1Option2">2</option>
                    <option value="select1.1Option3">3</option>
                </select>
            </td>
            <td>
                <select name="select1.2">
                    <option value=""></option>
                    <option value="select1.2Option1">1</option>
                    <option value="select1.2Option2">2</option>
                    <option value="select1.2Option3">3</option>
                </select>
            </td>
        </tr>
        <tr onchange="this.parentNode.parentNode.nextSibling.nextSibling.style.display='block'" style="display: none">
            <td>
                <select name="select2.1">
                    <option value=""></option>
                    <option value="select2.1Option1">1</option>
                    <option value="select2.1Option2">2</option>
                    <option value="select2.1Option3">3</option>
                </select>
            </td>
            <td>
                <select name="select2.2">
                    <option value=""></option>
                    <option value="select2.2Option1">1</option>
                    <option value="select2.2Option2">2</option>
                    <option value="select2.2Option3">3</option>
                </select>
            </td>
        </tr>
    </table>
</form>