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JavaScript The Solution

Colin Grubbs
Colin Grubbs
2,137 Points

Does isNaN change the value of the variable to NaN?

When I build the message variable and write the message to the doc when the "not a number" test fails, I notice it changed the input you provide to "NaN" onto the web page. Does this have to do with the parseFloat method?

1 Answer

Hi Colin!

No, isNaN is only a test function, it is not transformative.

More info:



I'd have to see your actual code to analyze the situation further...

This might address the parseFloat part of your question, though:


(See what happens to var g)

I hope that helps.

Stay safe and happy coding!