diff --git a/starter-code/index.html b/starter-code/index.html
index eed6a96..78fd473 100644
--- a/starter-code/index.html
+++ b/starter-code/index.html
@@ -11,9 +11,9 @@
     <p>Open your console!</p>
     <p>You should see a message saying your JavaScript has loaded.</p>
 
-    <!-- <script type="text/javascript" src="login.js"></script> -->
-    <!-- <script type="text/javascript" src="security_questions.js"></script> -->
-    <!-- <script type="text/javascript" src="sing.js"></script> -->
+   <!--  <script type="text/javascript" src="login.js"></script>
+    <script type="text/javascript" src="security_questions.js"></script> -->
+    <script type="text/javascript" src="sing.js"></script>
 
   </body>
 </html>
diff --git a/starter-code/login.js b/starter-code/login.js
index 3ec61ba..e0c5407 100644
--- a/starter-code/login.js
+++ b/starter-code/login.js
@@ -1 +1,14 @@
 console.log("login.js loaded");
+var userLogin = {userName: "Ryantran", Password: "Tranvannhan1"}
+
+var passwordInput;
+var loggedIn = false;
+while (!loggedIn){
+	passwordInput = prompt("Enter password for user " + userLogin.userName + ".")
+	if (passwordInput === userLogin.Password){
+		console.log ("correct!!!");
+	loggedIn = true
+	}else {
+		console.log("Try again");
+	}
+}
\ No newline at end of file
diff --git a/starter-code/security_questions.js b/starter-code/security_questions.js
index 03606fe..e5481d5 100644
--- a/starter-code/security_questions.js
+++ b/starter-code/security_questions.js
@@ -1 +1,24 @@
 console.log("security_questions.js loaded");
+var securityQuestions = [
+	{
+		question: "What was your first pet's name?",expectedAnswer: "miki"
+	},
+	{
+		question: "what is your mother name?",expectedAnswer: "Alice"
+	},
+	{
+		question: "What is your first job?",expectedAnswer: "Architecture"
+	}
+]
+
+var userAnswer = "";
+
+
+for (var i=0; i < securityQuestions.length; i++){
+	userAnswer = prompt(securityQuestions[i].question);
+	if (userAnswer !== securityQuestions[i].expectedAnswer){
+		alert("Incorrect security question!");
+    
+		break;
+	}
+}
\ No newline at end of file
diff --git a/starter-code/sing.js b/starter-code/sing.js
index c656175..7a063f8 100644
--- a/starter-code/sing.js
+++ b/starter-code/sing.js
@@ -1 +1,9 @@
 console.log("sing.js loaded");
+var numBottles = prompt("how many bottles in the wall?")
+var bottles = 'bottles';
+while (numBottles > 0) {
+	console.log(numBottles + 'bottles' + 'of beer on the wall');
+	console.log(numBottles + 'bottles' + 'of beer');
+	console.log("Take one down and pass it around,");
+	console.log(numBottles - 1);
+}
\ No newline at end of file