I have an issue with my HTML datalist and the javascript to manage it... My purpose is to change the values of a HTML "select" from a datalist.

Here is my datalist :

<input class="verylarge" id="choix_client" name="choix_client" type="text" list="client" autofocus="" required spellcheck="false" onChange="getSite(this.value);" title="Les simples quotes sont remplacées par des espaces"><br>
<datalist id="client">
<?php
  foreach ($tabCLIENTS as $value) { 
    list($id,$nom) = explode(";",$value);
    $nom = str_replace("'", " ", $nom);
    ?>
    <option data-value="<?=$id?>" value="<?=$nom?>"> 
  <?php } ?>
</datalist>
<input type="hidden" name="idClient" id="idClient">

With the id number ($id), i want to change de values of the next Select option menu. My Javascript is activated on datalist change :

function getSite() {
  var NomClient = document.getElementById("choix_client").value;

  var idClient = document.querySelector("#client option[value='" + NomClient + "']").dataset.value;

  document.getElementById('idClient').value = idClient;

  $.ajax({
    type: "POST",
    url: "getSite.php",
    data: 'client=' + idClient,
    success: function(data) {
      $("#choix_site").html(data);
    }
  });
}

In my datalist, I have some Client names with single quote... (for examble : "L'EQUIPE"). It's a problem when i try to get the dataset value :

document.querySelector("#client option[value='"+NomClient+"']").dataset.value;

It's impossible to protect de single quote with \ because the querySelector won't find the good option...

If someone as an idea to help me...