What's the difference between null and undefined?

While the presence of both null and undefined in JavaScript provides nuanced ways to represent the absence of values, it also introduces complexity and potential pitfalls.

JavaScript, unlike many programming languages, has two distinct values for representing absence of value: null and undefined. This often leads to confusion among developers, especially those new to the language.

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In this article, we'll dissect the differences between the two, illustrate with code examples, and analyze the advantages and disadvantages associated with them.