examples/auth/simple-auth-server/static/main.js

function post(url = ``, data = {}) {
  // Default options are marked with *
  return fetch(url, {
    method: "POST", // *GET, POST, PUT, DELETE, etc.
    mode: "cors", // no-cors, cors, *same-origin
    cache: "no-cache", // *default, no-cache, reload, force-cache, only-if-cached
    headers: {
      "Content-Type": "application/json; charset=utf-8",
    },
    redirect: "follow", // manual, *follow, error
    referrer: "no-referrer", // no-referrer, *client
    body: JSON.stringify(data), // body data type must match "Content-Type" header
  }).then(response => response.json()) // parses response to JSON
}

// window.addEventListener('load', function() {
//   console.log('All assets are loaded');
//   console.log(getUrlVars());
// });