this in JS: Arrow vs Expression vs Declaration | JavaScript Explained Fast

Confused about how this works in JavaScript? Let’s clear it up in 60 seconds!
▶ Arrow Function: this is lexically scoped, inherits from the parent.
▶ Function Expression: this depends on how it's called, not where it’s written.
▶ Function Declaration: Same as expression — this is dynamic based on invocation.

Mastering this is a game-changer for interviews and real-world coding.

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