はてなブックマーク

non-primitives Contain “just a value” Provide properties and functions regarding that value non-primitive properties and functions var b = new String('bramus'); console.log(b.length); var b = new String('bramus'); console.log(b.toUpperCase()); But I can do that on a primitive too, right? var a = 'bramus'; console.log(a.length); var a = 'bramus'; console.log(a.toUpperCase()); Right. (Again) Essenti