Added alert to confirm when wallet addresses are added to clipboard

app.js

@@ -28,16 +28,22 @@ const dogeadd = document.getElementById("dogewall").textContent;
 document.getElementById("btcwall").addEventListener("click", function(){
         // Copy BTC address to clipboard
         navigator.clipboard.writeText(btcadd);
+        // Display alert to confirm the address was added to clipboard
+        alert("BTC address copied to clipboard");
 });
 
 // Watch for click on ETH wallet address
 document.getElementById("ethwall").addEventListener("click", function(){
         // Copy ETH address to clipboard
         navigator.clipboard.writeText(ethadd);
+        // Display alert to confirm the address was added to clipboard
+        alert("ETH address copied to clipboard");
 });
 
 // Watch for click on DOGE wallet address
 document.getElementById("dogewall").addEventListener("click", function(){
         // Copy DOGE address to clipboard
         navigator.clipboard.writeText(dogeadd);
+        // Display alert to confirm the address was added to clipboard
+        alert("DOGE address copied to clipboard");
 });