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$ curl repovive.com/roadmaps/javascript/functions/scope-function

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$ curl repovive.com/roadmaps/javascript/functions/scope-function

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Scope - Function - Functions | JavaScript | Repovive

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JavaScript22 sections · 783 units18h total

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Scope - Function

Inside the function

Variables declared inside a function are local to that function:

function calculateTax(amount) {
  const rate = 0.08  // Only exists inside
  return amount * rate
}

calculateTax(100)  // 8
console.log(rate)  // Error: rate is not defined

Local variables don't exist outside their function. This prevents naming conflicts and makes functions self-contained.