add password and confirm password validation

Public/signup.html

@@ -20,7 +20,7 @@
             <button type="submit">Submit</button>
         </form>
     </section>
-
+    <script src="./signup.js"></script>
 
 </body>
 

Public/signup.js

@@ -0,0 +1,12 @@
+const username = document.getElementById("username");
+const password = document.getElementById("password");
+const confirmPass = document.getElementById("confirm-password");
+
+confirmPass.addEventListener('keyup',function(){
+    if (this.value !== password.value){
+        console.log("can't submit yet");
+    } else {
+        console.log("matched");
+    }
+
+});