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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

0 likes · 9 min read

What Is an Activation Object in JavaScript and Why It Still Matters

Yuewen Frontend Team

Nov 5, 2018 · Frontend Development

Master JavaScript Execution Contexts and Call Stack: A Deep Dive

This article explains how JavaScript execution contexts and the call stack work, covering their types, creation and execution phases, this binding, lexical and variable environments, and includes code examples to illustrate these core concepts for developers.

Call StackExecution ContextJavaScript

0 likes · 13 min read

Master JavaScript Execution Contexts and Call Stack: A Deep Dive