How do you check that a number is NaN in JavaScript?
Answers
NaN is a JavaScript property, which is "Not-a-Number" value. To find out whether value is NaN, use the Number.isNaN() or isNan() method.
Explanation:
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Five Quick Tips to Learn JavaScript Faster
Reading a lot is not enough and not reading at all is bad as well.
Don't be afraid to leave your comfort zone.
When writing an algorithm, plain text may be helpful.
Stop using alerts and embrace console. log.
Get some basic concepts clear.
Yes, since js syntax is a bit familiar with python. If you want to do frontend with js, backend with python then learning both of them is okay. Btw, if you really want js, learn nodejs so that you can do both backend and frontend with it. If you want more backend power, you should learn python first.