Why cant i use "undefined" here as string, cant i use a keyword as string

JavaScript
1

Tell us what’s happening:
Describe your issue in detail here.

  **Your code so far**


// Setup
function abTest(a, b) {
// Only change code below this line

if(a<0 || b<0 ) {

return undefined;

}


// Only change code above this line

return Math.round(Math.pow(Math.sqrt(a) + Math.sqrt(b), 2));
}

abTest(2,2);

  **Your browser information:**

User Agent is: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/98.0.4758.102 Safari/537.36

Challenge: Return Early Pattern for Functions

Link to the challenge:

2

Why cant i use “undefined” here as string, cant i use a keyword as string

You can have a string of “undefined”. But there is a difference between a string containing those letters and the JS primitive type/value undefined, expressed with that keyword. You need to return the latter here.

3 Likes
3

I think you can just use :
return “undefined” ;
But this “undefined” is a string it is not the JS primitive type/value undefined.

1 Like
4

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