javascript send post request
let data = {element: "barium"};
fetch("/post/data/here", {
  method: "POST", 
  body: JSON.stringify(data)
}).then(res => {
  console.log("Request complete! response:", res);
});
// If you are as lazy as me (or just prefer a shortcut/helper):
window.post = function(url, data) {
  return fetch(url, {method: "POST", body: JSON.stringify(data)});
}
// ...
post("post/data/here", {element: "osmium"});
