![]() ![]() However, valueOf() and toString() are usually implicitly called through type conversion and you don't need to call them yourself in your code. valueOf(), toString(), and toLocaleString() exist to be polymorphic and you should expect the object to define its own implementation with sensible behaviors, so you can call them as instance methods.All modern JavaScript utilities for working with objects are static. ![]() Furthermore, these properties are not inherited by null-prototype objects. All objects descending from Object.prototype may define a custom own property that has the same name, but with entirely different semantics from what you expect. only its initial behavior makes sense and no descending object could override it in a meaningful way). You should avoid calling any Object.prototype method directly from the instance, especially those that are not intended to be polymorphic (i.e. Object.prototype._lookupSetter_() Deprecated.Object.prototype._lookupGetter_() Deprecated.Object.prototype._defineGetter_() Deprecated. ![]()
0 Comments
Leave a Reply. |
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |