<p></p>
<p><b>@HolgerJeromin</b> commented on this pull request.</p>

<hr>

<p>In <a href="https://github.com/openstreetmap/openstreetmap-website/pull/5642#discussion_r1948535621">app/assets/javascripts/index/directions/fossgis_valhalla.js</a>:</p>
<pre style='color:#555'>> @@ -99,22 +99,18 @@
               language: I18n.currentLocale()
             }
           })
-        };
-        return $.ajax({
-          url: OSM.FOSSGIS_VALHALLA_URL,
-          data,
-          dataType: "json",
-          success: function ({ trip }) {
-            if (trip.status === 0) {
-              callback(false, _processDirections(trip.legs));
-            } else {
-              callback(true);
+        });
+        return fetch(OSM.FOSSGIS_VALHALLA_URL + "?" + query)
+          .then(response => response.json())
+          .then(({ trip }) => {
+            if (trip.status !== 0) {
</pre>
<p dir="auto">The callback result can not be used.</p>
<div class="highlight highlight-source-ts" dir="auto"><pre class="notranslate">            <span class="pl-k">if</span> <span class="pl-kos">(</span><span class="pl-s1">trip</span><span class="pl-kos">.</span><span class="pl-c1">status</span> <span class="pl-c1">!==</span> <span class="pl-c1">0</span><span class="pl-kos">)</span> <span class="pl-kos">{</span>
              <span class="pl-k">return</span> <span class="pl-en">callback</span><span class="pl-kos">(</span><span class="pl-c1">true</span><span class="pl-kos">)</span><span class="pl-kos">;</span>
            <span class="pl-kos">}</span>
            <span class="pl-k">return</span> <span class="pl-en">callback</span><span class="pl-kos">(</span><span class="pl-c1">false</span><span class="pl-kos">,</span> <span class="pl-en">_processDirections</span><span class="pl-kos">(</span><span class="pl-s1">trip</span><span class="pl-kos">.</span><span class="pl-c1">legs</span><span class="pl-kos">)</span><span class="pl-kos">)</span><span class="pl-kos">;</span></pre></div>
<p dir="auto">or</p>
<div class="highlight highlight-source-ts" dir="auto"><pre class="notranslate">            <span class="pl-k">if</span> <span class="pl-kos">(</span><span class="pl-s1">trip</span><span class="pl-kos">.</span><span class="pl-c1">status</span> <span class="pl-c1">!==</span> <span class="pl-c1">0</span><span class="pl-kos">)</span> <span class="pl-kos">{</span>
              <span class="pl-en">callback</span><span class="pl-kos">(</span><span class="pl-c1">true</span><span class="pl-kos">)</span><span class="pl-kos">;</span>
              <span class="pl-k">return</span><span class="pl-kos">;</span>
            <span class="pl-kos">}</span>
            <span class="pl-en">callback</span><span class="pl-kos">(</span><span class="pl-c1">false</span><span class="pl-kos">,</span> <span class="pl-en">_processDirections</span><span class="pl-kos">(</span><span class="pl-s1">trip</span><span class="pl-kos">.</span><span class="pl-c1">legs</span><span class="pl-kos">)</span><span class="pl-kos">)</span><span class="pl-kos">;</span></pre></div>

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