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

Posted by Max Gabriel
Max Gabriel
11,213 Points

How do I combine two conditions in the closing else statement?

.

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

if ( isAdmin ) {
    alert('Welcome administrator');
} else if (isStudent) {
    alert('Welcome student');
}

else(isAdmin = false)  {
    alert('Who are you?');
}
else(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>
Dylan Glover
Dylan Glover
2,537 Points

the else would be like your catch all, so you don't need 2 else conditions for if isAdmin and isStudent being false, in fact you don't even have to specify if a condition is false.

instead of :

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

you could just have:

else {
    alert('Who are you?');
}

this would alert if they are both not a student or an admin.

1 Answer

Steven Parker
Steven Parker
229,732 Points
Steven Parker
Steven Parker
229,732 Points

A plain "else" doesn't take a conditional expression. If you need to test a condition, then you use "else if".

The "else" by itself will always be the very last thing in a testing chain, and it handles everything that did not meet any of the "if" or "else if" conditions before it.