# JavaScript 호이스팅 (Hoisting)

호이스팅(Hoisting)

함수 선언부가 유효범위 최상단으로 끌어올려지는 현상

 

const a = 7

double() //error 발생


const double = function () {
console.log(a*2)
}


Ex) hoisting 

const a = 7

double() //14

function double () {
console.log(a*2)