Mastering JavaScript requires understanding its built-in functions and methods, including the difference between `isFinite()` and `Number.isFinite()`. These two seemingly identical functions have different behaviors depending on context: as a method or global function. Use `Number.isFinite()` for explicitness and clarity, and `isFinite()` within objects or globally, depending on your needs.
The `isFinite()` function attempts to convert its argument to a number, whereas `Number.isFinite()` only accepts numeric values, making it more type-sensitive and suitable for most use cases, especially when type sensitivity is crucial.
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