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나는 instanceof 연산자로 놀고 있습니다. 나는 나의 이해가 정확한지 여부를 알고 싶어 여부javascript instanceOf 설명
var C = function(){};
// in the above statement C has a "prototype" property which points to an object which has
// the constructor property which points to C constructor
var o1 = new C();
// in above statement o1.__proto__ is points to C.prototype. that means inheriting from C.prototype.
console.log(o1 instanceof C) // returns true
//instanceof will check o1.__proto__ is equals to C.prototype(recursively until it finds null object).
C.prototype = {};
console.log(o1 instanceof C) // false;
in the above case o1 was inherited from C.prototype which points to the different object not the present C.prototype object (empty object). so the instanceof condition check fails hence its false.
내 해석이 잘못되면 저에게 알려주세요
귀하의 이해가 맞는 것 같습니다. –