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What is the difference between the "NaN" and the "undefined" in JavaScript? Please help me to understand đđŒđ
5 Respostas
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NaN: Not a number: As the name implies, it is used to denote that the value of an object is not a number. There are many ways that you can generate this error, one being invalid math operations such as 0/0 or sqrt(-1).
Undefined: It means that the object doesn't have any value, therefore undefined. This occurs when you create a variable and don't assign a value to it.
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NaN = Not_a_Number
Undefined = //no one defined it !!
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Bastien GERMANY (LeGerme) that's a confusing question đ”. No one defined that it's undefined đ
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Please use the search bar before posting to avoid duplicates.
https://www.sololearn.com/discuss/1772843/?ref=app
https://www.sololearn.com/post/114993/?ref=app
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Is it really true Dead ? đ€