add button functionality

Author: Supravisor

index.html

@@ -24,7 +24,7 @@ <h2>Diff checker</h2>
 
     <div id="buttons">
       <button id="button-original" onclick="originalFunc()">Hide Original</button>
-      <button id="button-compare">Hide Compare</button>
+      <button id="button-compare" onclick="compareFunc()">Hide Compare</button>
     </div>
 
     <script src="script.js"></script>