Taobao Frontend Technology
Jun 3, 2021 · Fundamentals
What Is an Activation Object in JavaScript and Why It Still Matters
This article explains the historical concept of activation objects in ECMAScript 1/3, why they disappeared after ES5 in favor of lexical environments, how the idea persists as a generalized abstraction similar to stack frames, and how it relates to closures.
Activation ObjectClosureECMAScript
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