DDG Maps to google maps

ddg-to-gmaps.user.js

// ==UserScript==
// @name DDG Maps to google maps
// @description Redirect you from DDG Maps to Google Maps
// @version 0.1
// @match *://*duckduckgo.com/*
// @author @bernikr
// @grant none
// @run-at document-start
// ==/UserScript==

function checkurl(){
    var currentURL = window.document.location.toString();
    if(currentURL.includes("iaxm=")) {
        var newURL = currentURL.replace("://duckduckgo.com","://maps.google.com");
        window.document.location.replace(newURL);
    }
}

var previousUrl = '';
var observer = new MutationObserver(function(mutations) {
  if (location.href !== previousUrl) {
      previousUrl = location.href;
      checkurl();
    }
});
observer.observe(document, {attributes: true, childList: true, subtree: true});

I used greasemonkey and your script but when i search an address into ddg search. it only shows the default apple maps can you tell me how you did it?

whats the url after you search?