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JavaScript

Posted by Henry Spock
Henry Spock
20,615 Points

I'm a bit confused about "guess" being a string. I don't understand why it is?

When I run the code without +guess (just using guess) I get no errors, whether with correct or incorrect guesses. Since the ultimate value that gets assigned to guess is the number from the prompt, why is it a string?

2 Answers

Cameron Childres
Cameron Childres
11,820 Points
Cameron Childres
Cameron Childres
11,820 Points

Hi Henry,

Prompt returns a string. Check out "return value" under w3schools documentation for prompt():

Return Value: A String. If the user clicks "OK", the input value is returned. If the user clicks "cancel", null is returned. If the user clicks OK without entering any text, an empty string is returned.

You can turn this value in to a number with the parseInt() function, like parseInt(guess)

Henry Spock
Henry Spock
20,615 Points
Henry Spock
Henry Spock
20,615 Points

Hi Cameron - In a subsequent video he went into this a bit further. I understand the concept, but when I tested that particular code in the Chrome JS Console, I didn't receive an error, which added to my confusion. But yes, when he went over the parseFloat, parseInt and unary + it started making a lot more sense.

I did start reading the w3 documentation.

Thank you!