JSFiddle - React, Tailwind, and code Playground
HTML
<div class="cartRow">
<table width="100%">
<tr>
<td><span class="deletefromcart">Supprimer</span></td>
</tr>
</table>
<input name="idprod" type="hidden" value="1" />
</div>
<div class="cartRow">
<table width="100%">
<tr>
<td><span class="deletefromcart">Supprimer</span></td>
</tr>
</table>
<input name="idprod" type="hidden" value="2" />
</div>
<div class="cartRow">
<table width="100%">
<tr>
<td><span class="deletefromcart">Supprimer</span></td>
</tr>
</table>
<input name="idprod" type="hidden" value="3" />
</div>
JavaScript
$(function(){
$('.deletefromcart').on('click', function(){
console.log($(this).parents('table:eq(0)').next('input').val())
})
})