What is the difference between var, let, and const?

Keyword Scope Re-declar

Re-assig

Hoisted?

var Functio

✅ Yes ✅ Yes ✅ Yes (undefined)

let Block ❌ No ✅ Yes 🚫 Temporarily dead

zone

const Block ❌ No ❌ No 🚫 Temporarily dead

zone

Example:

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let x = 10; const y = 20; var z = 30;