JavaScript by Patrik

Function Scope

JavaScript has function scope: Each function creates a new scope.

Variables defined inside a function are not accessible (visible) from outside the function.

Variables declared with var, let and const are quite similar when declared inside a function.

 function varFunction() {
  var message = "Hello";   // Function Scope
}
function letFunction() {
  let message = "Hello";   // Function Scope
}
function constFunction() {
  const message = "Hello";   // Function Scope
}

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	function varFunction() {
	var message = "Hello"; // Function Scope
	}
	function letFunction() {
	let message = "Hello"; // Function Scope
	}
	function constFunction() {
	const message = "Hello"; // Function Scope
	}