How to remove class from all child elements

Question

I have a html like:

<table id="message">
    <tr class="clsaa1">
        <td>
            <div class="class3">
                <table class="sub_1">
                ----------------------
                ----------------------
                </table>
            <div>
        </td>
    </tr>
    <tr class="clsaa2">
        <td>
            <div class="class3">
                ----------------------
                ----------------------
            <div>
        </td>
    </tr>
</table>

I need to remove all class attributes inside #message.

I have tried

$('#message').siblings().removeAttr('class');

and

$('#message').children().removeAttr('class');

But this is not working.

Answer 1

the simple and elegant solution would be just:

$(".class").removeClass("class");