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JavaScript JavaScript Basics (Retired) Creating Reusable Code with Functions Random Number Challenge, Part II Solution

Posted by Ben Mohammad
Ben Mohammad
5,659 Points

my customised error mesaage don't log to the console it just says 'nine is not defined'

i can't see a typo.........

function getRandomNumber( lower, upper ){
    if ( isNaN(lower) || isNaN(upper) ){
    throw new Error('Both arguments  must be digits');
    }
return Math.floor(Math.random

        () * (upper - lower + 1 ))+ lower;


}
console.log(getRandomNumber( 2, 6));
console.log(getRandomNumber( 9, 5));
console.log(getRandomNumber( 4, 6));
console.log(getRandomNumber( nine, 8 ));

1 Answer

miikis
miikis
44,957 Points

Hey Ben,

That nine needs to be of type String — i.e., it needs quotation marks. As it stands, the JavaScript interpreter thinks that you're referring to a variable called nine. And, of course, that doesn't exist.