javascript中__proo__ constructor prototype的總結

function Foo() {};
let f1 = new Foo();

console.log(f1.constructor); // [Function: Foo]

console.log(f1.__proto__); // Foo {}
console.log(Foo.prototype); // Foo {}
console.log(Foo.prototype === f1.__proto__); // true


console.log(Foo.__proto__ === Foo.constructor.prototype); // true