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

mehmet odabas
mehmet odabas
2,120 Points
Posted by mehmet odabas
mehmet odabas
2,120 Points

"null" is not an object error

var answer = prompt('What is the best programming language?');
var a = answer.toUpperCase();

if(a === "JAVASCRIPT")
{
  document.write("You are correct"); 
}

2 Answers

Chyno Deluxe
Chyno Deluxe
16,936 Points

You are adding unnecessary script to what the challenge is asking you to do. The error comes from the variable a which you are giving the value of answer.

The answer holds no value until the user has given the prompt one. Removing the var a and changing the condition to the following should work. Also, you are writing the message to the document when you need to provide it in a alert box. view below

var answer = prompt('What is the best programming language?');

if(answer === "JavaScript") {
  alert("You are correct"); 
}

I hope this helps.

mehmet odabas
mehmet odabas
2,120 Points
mehmet odabas
mehmet odabas
2,120 Points

thanks that worked for me