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

Fairen Baker
Fairen Baker
1,892 Points
Posted by Fairen Baker
Fairen Baker
1,892 Points

I can't figure out what's wrong with my "else" statement

I can't figure out what's wrong with my "else" statement

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

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

else( 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

Trevor Skelton
Trevor Skelton
1,101 Points
Trevor Skelton
Trevor Skelton
1,101 Points

The else statement doesn't take parameters. It is there when every other if is false, e.g. 

if(light == on) {do something} 
else {do something}

If you need parameters then it is simply an else if block, e.g. 

if(light == red) {stop} 
else if (light == green) {go} 
else if (light == yellow) {slow down} 
else {light is broke}
Hugo Paz
Hugo Paz
15,622 Points
Hugo Paz
Hugo Paz
15,622 Points

Hi Fairen,

With else statements, you dont have a condition, so you just write:

else {
//code to run
}

You always check the condition with an if and if there is something you want to happen if the condition fails, you use an else.

if(condition){
//condition is true - do something
} else {
//condition is false - do something else
}