Understanding Javascript The Weird Part Parts Extra Quality -

function Dog(name) this.name = name; Dog.prototype.bark = function() return 'woof'; ; const d = new Dog('Rex'); d.bark(); // 'woof' Weird parts:

function outer() let secret = 'closed over'; return function inner() console.log(secret); ; understanding javascript the weird part parts

typeof null; // 'object' (bug in JS) typeof function(){}; // 'function' (but not a separate type) [] instanceof Array; // true [] instanceof Object; // true (arrays are objects) false , 0 , '' (empty string), null , undefined , NaN , -0 , 0n function Dog(name) this