Interview Question

What is lexical scope?

Lexical scope follows code nesting, not the caller location.

💡 Concept ✅ Quick Revision ⚡ JavaScript

Answer

Lexical scope means identifier visibility is determined by source-code nesting. • A function’s outer environment is chosen where the function is created. • Calling the function elsewhere does not change that lexical parent. • Closures depend on lexical scope.

Example

Code

const name = 'outer';
function show() { console.log(name); }
show();

Output

outer

Quick Revision

Lexical scope follows code nesting, not the caller location.

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