getquery.js

function myFunction() {
  var str = "http://www.wikipedia.org/default.html?ct=32&op=92&item=98";
  var patt = /[?&](?<key>[^&]*)=(?<value>[^&]*)/giu;
  let result = str.match(patt);
  let extra = result.map(item=>item.match(/([^&?=]+)/g))
  var object = extra.reduce(function(o, val) { o[val[0]] = val[1]; return o; }, {});
  console.log(object)
}

// with simple string methods
function withSimple(){
  var address = "https://en.wikipedia.org/default.html?ct=32&op=92&item=98"
  var queryStart = address.indexOf("?")
  var queries = address.substr(queryStart+1).split("&")
  var keyValueArray= queries.map(item=>item.split("="))
  var object = keyValueArray.reduce(function(o, val) { o[val[0]] = val[1]; return o; }, {});
  console.log(object);
}