JavaScript Scope
Yatin B.1 min read
Date: 2023-06-12
This tutorial explains JavaScript scope, which dictates variable and function accessibility within a program. It covers global scope (accessible everywhere), local scope (within functions or blocks), and block scope (introduced with let and const). Lexical scoping (determined by code structure) is contrasted with dynamic scoping (runtime-based). Closures, allowing inner functions to access outer variables even after execution, are also discussed. Finally, module scope, providing encapsulation within modules, is explained. Understanding scope is crucial for writing clean, maintainable JavaScript code.
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