diff --git a/src/app.js b/src/app.js
index 60b7212..4313839 100644
--- a/src/app.js
+++ b/src/app.js
@@ -12,4 +12,9 @@ async function testApi() {
     var sysInfo = await d2Get("/api/system/info.json");
     console.log(sysInfo.version);
 }
-testApi();
+
+window.helloWorld = async function () {
+    await testApi();
+    alert("Hello world...");
+    
+};
diff --git a/src/index.html b/src/index.html
index a0b0261..e340c67 100644
--- a/src/index.html
+++ b/src/index.html
@@ -21,6 +21,8 @@
 
     <div class="mainView">
         <p>Content goes here...</p>
+
+        <button onclick="helloWorld()">Hello</button>
     </div>
 </body>