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JavaScript JavaScript Basics (Retired) Making Decisions with Conditional Statements Add a Final Else Clause

Posted by tarkez k
tarkez k
Courses Plus Student 3,519 Points

how to write two variable in one clause

Add a final else clause to this conditional statement so that if the isAdmin variable and isStudent variables are both false an alert opens with the message "Who are you?"

script.js 
var isAdmin = false;
var isStudent = false;

if ( isAdmin ) {
    alert('Welcome administrator')
} else if (isStudent) {
    alert('Welcome student')
} else (isAdmin  isStudent === false) {
alert ('Who are you?')
}
index.html 
<!DOCTYPE HTML>
<html>
<head>
  <meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
  <title>JavaScript Basics</title>
</head>
<body>
<script src="script.js"></script>
</body>
</html>

3 Answers

Jason Anders
MOD
Jason Anders
Treehouse Moderator 145,860 Points
Jason Anders
Jason Anders
Treehouse Moderator 145,860 Points

For what you are doing, you don't actually need any conditions for the final else statement. If the 'admin' returns true, the loop stops there and returns "Welcome Administrator." If not, it checks the if/else. If that returns true then it will return "Welcome student." If neither return true, the final else will automatically return "Who are you?"

var isAdmin = false;
var isStudent = false;

if ( isAdmin ) {
    alert('Welcome administrator')
} else if (isStudent) {
    alert('Welcome student')
} else {
alert ('Who are you?')
}

Jason

liktid
liktid
6,387 Points
liktid
liktid
6,387 Points

You can do that with logical operators,

&& = "and";
|| = "or";
! = "not"

In your case it would be

else (isAdmin === false &&  isStudent === false) {
alert ('Who are you?')
}

This means that BOTH conditions need to be false. If you would use || than only one conditions needs to be false. If you would print it: When isAdmin is false AND isStudent is false, then open an alert with the message "Who are you?".

Hope this helps

tarkez k
PLUS
tarkez k
Courses Plus Student 3,519 Points
tarkez k
tarkez k
Courses Plus Student 3,519 Points

Thanks. I got it