Einen asynchronen Request über Javascript machen.

async function postData(url, parameters) {
  const response = await fetch(url, parameters);
  if (!response.ok) {
    if (response.status == 0) {
      // on network error
      console.log("Network-Error: " + response.status + ", " + response.statusText);
    }
  } else {
    // on success
    return response.json();
  }
};
 
postData(url_ident, parameters)
  .then(res => {
    let data = res.data;
    console.log(data);
  }
});