Question

what is undefined in JavaScript?​

Answer 1

Answer:

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Explanation:

The undefined property indicates that a variable has not been assigned a value, or not declared at all.

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Answer 2

Explanation:

undefined is a property of the global object. That is, it is a variable in global scope. The initial value of undefined is the primitive value undefined . In modern browsers (JavaScript 1.8. ... A method or statement also returns undefined if the variable that is being evaluated does not have an assigned value.

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