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Physics The secret to perfect espresso? It’s physics Inspired by gas and liquid flow in earth science, researchers brewed an equation to calculate the speed of water percolation through ground ...
Main question: What is a NaN value or NaN exactly (in the words of a non-math professor)? Furthermore i have a few questions about the whole circumstance, which giving me complaints in understanding what a NaN should be, which are not necessary to answer my main question but desired: What are operations which causing a NaN value as result?
What is NaN (Not a Number) in the words of a beginner?
It actually makes sense, because "A" is actually not a number. But what we really want to check is if myVar is exactly of value NaN. So isNaN () cannot help. Then what should we do instead? In the light that NaN is the only JavaScript value that is treated unequal to itself, so we can check for its equality to itself using !==