CLOSURE

CLOSURE

1. intro

   • is inner function that access outer function variable
   • 3 scope chain (pham vi truy xuat bien)
     • access own scope
     • outer function's variable
     • global variable

2. example

   • function outside(x){ function inside(y){ return x+y; } return inside; } fn_inside = outside(3); var result = fn_inside(5); console.log("Result = " + result); var result1 = outside(3)(5); console.log("Result 1 = " + result1);