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JavaScript JavaScript Basics (Retired) Making Decisions with Conditional Statements Introducing Conditional Statements

Courtney Mahida
Courtney Mahida
2,367 Points
Posted by Courtney Mahida
Courtney Mahida
2,367 Points

There was an error with your code: TypeError: 'null' is not an object (evaluating 'answer.toUpperCase')

When I delete '.toUpperCase' and change 'JAVASCRIPT' to 'Javascript' -- I get an error that says: Comparing strings is case sensitive. So 'Javascript' or 'javascript' is not equal to 'JavaScript'

Either way I write it, I can't move on in the lesson...

app.js 
var answer = prompt('What is the best programming language?');
if ( answer.toUpperCase() === 'JAVASCRIPT' ) {
  alert("You are correct");  
}
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="app.js"></script>
</body>
</html>

1 Answer

Steve Hunter
Steve Hunter
57,712 Points
Steve Hunter
Steve Hunter
57,712 Points

Hi Courtney,

You're pretty close with that - you've done the hard bit!

The question wants you to test for equality with the string "JavaScript" - that's what the tests behind the compiler are doing. You don't want to convert to uppercase; you want to test against the exact string given. So your code should look something like:

var answer = prompt("What is the best programming language?");
if (answer === "JavaScript"){
  alert("You are correct");
}

I hope that helps.

Steve.

Courtney Mahida
Courtney Mahida
2,367 Points
Courtney Mahida
Courtney Mahida
2,367 Points

Right I get that but when I delete '.toUpperCase' and change 'JAVASCRIPT' to 'Javascript' -- I get an error that says: Comparing strings is case sensitive. So 'Javascript' or 'javascript' is not equal to 'JavaScript'

Either way I write it, I can't move on in the lesson...

Steve Hunter
Steve Hunter
57,712 Points

You need a capital S in JavaScript.

Courtney Mahida
Courtney Mahida
2,367 Points
Courtney Mahida
Courtney Mahida
2,367 Points

lol. i can't believe i didn't see that. THANK YOU.

Steve Hunter
Steve Hunter
57,712 Points

Hey, no problem! Glad you got it sorted.

Steve.