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June 7, 2026 · 1 min read

Can you explain what the ‘let’ and ‘const’ keywords are used for in JavaScript, and how they differ from ‘var’?

‘let’ and ‘const’ are used for variable declarations in JavaScript introduced in ES6. ‘let’ allows you to declare block-scoped variables, whereas ‘const’ is used to declare block-scoped constants that cannot…

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📅 Jun 07, 2026 ⏱ 1 min read

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Can you explain what the ‘let’ and ‘const’ keywords are used for in JavaScript, and how they differ from ‘var’?

COVER // CAN YOU EXPLAIN WHAT THE ‘LET’ AND ‘CONST’ KEYWORDS ARE USED FOR IN JAVASCRIPT, AND HOW THEY DIFFER FROM ‘VAR’?

‘let’ and ‘const’ are used for variable declarations in JavaScript introduced in ES6. ‘let’ allows you to declare block-scoped variables, whereas ‘const’ is used to declare block-scoped constants that cannot be reassigned after their initial assignment, unlike ‘var’ which is function-scoped.

es6 javascript scope variables

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