How to access xAPI/Tin Can LMS variables in JavaScript

perhaps a variant of my first solution

function parseName( inURL ){
  const urlParams = new URLSearchParams(inURL.split("?")[1]);

  var name = "unknown";

  if( urlParams.has("actor") ){
    var actor = JSON.parse( urlParams.get("actor") )

    if( "name" in actor ){
      name = actor.name;
    }
  } else {
    console.error( "no 'actor' in url: ", urlParams );
  }

  console.log( "name: " + name );
  return name;
}

var url = window.location.href;
var name = parseName( url );
GetPlayer().SetVar("name", name);

name = actor.name; <- without [0]