fetch('/saveInDB/livraison', {
        credentials: 'include',
        method: 'post',
        body: JSON.stringify(values),
        headers: new Headers({'Content-Type': 'application/json'})
      })
      .then(res => res.json())
      .then(res => {
        if (res.error) {
          console.log(res.error);
        } else {
          console.log(res.success);
          commandeStore.display = 'paiement';
          commandeStore.status = '80vw';
        }
      });