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JavaScript

Posted by Dominik Sikiric
Dominik Sikiric
2,059 Points

Why this isn't working in Javascript

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

var isAdmin = false;
var isStudent = false;

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

} else ( false ) {
  alert("Who are you?");
}
Johnson Report
Johnson Report
563 Points

How does the argument of false work for the last else?

var isAdmin = false; 
var isStudent = false;

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

} 
else (false) { // what is this part doing? 
alert("Who are you?");
 }

2 Answers

Geoff Parsons
Geoff Parsons
11,679 Points

Else statements don't take a condition - they're just what happens if all other statements fail - so you can remove the "( false )" from after your else.

Dominik Sikiric
Dominik Sikiric
2,059 Points

Oh I see. I figured it out, I put just "empty" else at the end and removed both === true above . But, would it be correct if I didn't remove === true above? so like this; 

var isAdmin = false; 
var isStudent = false;

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

} 
else { 
alert("Who are you?");
 }
Geoff Parsons
Geoff Parsons
11,679 Points

If you're using booleans as you are here you don't need to compare them to anything, you can actually just check if ( isAdmin )

var isAdmin = false; 
var isStudent = false;

if ( isAdmin ) { 
   alert('Welcome administrator'); 
} else if (isStudent) { 
   alert('Welcome student');
} else { 
   alert("Who are you?");
 }
Dominik Sikiric
Dominik Sikiric
2,059 Points
Dominik Sikiric
Dominik Sikiric
2,059 Points

thanks :)