JSFiddle - React, Tailwind, and code Playground

HTML

<table id="Classement" border cellspacing=4 cellpadding=4 class="tableau">
<thead>
	<tr>
		<td>Classement</td>
		<td>Nom</td>
		<td>Temps</td>
	</tr>
</thead>
<tbody>
    <tr  id="Classement_body">
        <td>1er</td>
		<td>Durand</td>
		<td>1:00</td>
    </tr>
            
</tbody>
</table>

JavaScript

Classement=function ()
{
		
		var ClassementAnt = document.getElementById("Classement_body");
		ClassementAnt.style.display = "none";
		/*while ( ClassementAnt.firstChild != null ){
			ClassementAnt.removeChild(ClassementAnt.firstChild);
        }*/
 
 alert('done')

}
Classement();