Please tell what is come here

Question

https://code.sololearn.com/W2bca2yn1JO6/?ref=app

Answer 1

The correct syntax is isNaN, not isNan
JavaScript is case sensitive

Answer 2

The first line checks if the word 'String' is not a number. Since 'String' is not a number, the result is true and this result is assigned to the xx variable.

The second line checks if 5+5 is not a number. Before checking, 5+5 will be evaluated to 10. Then it checks if 10 is not a number. Since 10 is a number, the result is false and this result is assigned to the yz variable.

The if statement checks whether the result assigned to xx is false. Since xx is false, the code alerts the result of xx which is false.

Answer 3

silentlearner thanks for your knowledgeable answer.
Now, I got it.

Answer 4

silentlearner Really I don't know what the code do.
It's a challenge code.
Can you tell about it ?

Answer 5

Thanks a lot