Can you use AJAX to fill the result? about nice-select2 HOT 1 OPEN

  const niceSelectInstance = new NiceSelect(yourElement)
  const inputField = niceSelectInstance.dropdown.querySelector('.nice-select-search')
  
  inputField.addEventListener('input', () => {
    fetchAjaxData(yourElement, niceSelectInstance)
  })

  async fetchAjaxData (element, niceSelectInstance) {
    try {
      const reqPath = yourAjaxReqPath;
      const response = await fetch(reqPath, { headers: { accept: 'application/json' } });
      const data = await response.json();
  
      data.forEach((elem, i) => {
        element.options[i] = new Option(elem[0], elem[1]);
      });
  
      niceSelectInstance.update();
    } catch (error) {
      console.error(error);
      // Handle error if needed
    }
  }