getHtmlFromFile

"use strict";
async function getHtmlFromFile(f) {
 var fbody;
 fbody = await fetch(f).then(function(response) {
    return response.text();
  }).then(function(body) {
    return body;
  }).catch(function(error) {
    console.error(error);
  });
  return fbody;
}

$(document).ready(async () => {
  var f = './content.html';
  var r = await getHtmlFromFile(f);////*/
  alert(r);
  //$('#con').html(r);
});