Explaining Closures in JavaScript

Published: 23 September 2025
on channel: Алексей Волков про JavaScript

914

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📚 References
➖ Standard ECMA-262, 2nd Edition - August 1998 // Ecma International. URL: ecma-international.org/wp-content/uploads/ECMA-262_2nd_edition_august_1998.pdf (accessed: 03.09.2025).
➖ Standard ECMA-262, 16th Edition - June 2025 // Ecma International. URL: ecma-international.org/wp-content/uploads/ECMA-262_16th_edition_june_2025.pdf (accessed: 03.09.2025).
➖ ECMAScript 5.1 Annotated Specification // Wayback Machine. URL: web.archive.org/web/20210228100835/https://es5.javascript.ru/x10.html#x10.3 (accessed: 03.09.2025).

👨‍💻 Code from the video:
function hi() {
function say() {
var name = "John";
let middleName = "J.";
{
let surname = "Doe";
console.log(`Hi, ${name} ${middleName} ${surname}`);
}
}
return say();
}
hi();

🙏 Thanks
   • Объясняя замыкания в JavaScript
https://www.youtube.com/@AsForJS/videos

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🔴 Timestamps:
▶ 00:00 | Introduction
▶ 00:06 | Murych's comment
▶ 00:27 | FunArg's problem
▶ 01:01 | Bash Approach
▶ 01:14 | JavaScript Approach
▶ 01:18 | Example
▶ 01:34 | Context Stack
▶ 01:55 | Executing global()
▶ 02:44 | Executing hi()
▶ 03:27 | Executing say()
▶ 04:13 | Executing the {...} block
▶ 04:58 | Defining a Closure
▶ 05:21 | Acknowledgments

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