201507020721_ JavaScript authoritative Guide (sixth edition)--oo: Collection class and enumeration class, standard conversion method (p217-225)

I. Object-oriented technology in JavaScript (solving how to use the fatigue in JS programming)

1. Examples of collection classes

The collection represents a non-repeating unordered collection. Two basic methods: A. Add to Collection B. Whether in the collection.

　　　　Reference: p218 set.js

2. Enumeration examples

Enumeration represents a limited set of values.

　　　　Examples of Poker

Two. Standard conversion method

1. toString (); Tolocalstring ();

2. ValueOf ();

3. ToJSON (); When an object is serialized, it ignores the prototype and constructor of the object.

Note: json.stringify (); Converts an object to a string format;

Json.  Parse (); The object is changed to a pure object, there is no method;

4.

Three. Comparison method

1. Constructor = = constructor? elements = = elements?

p225

201507020721_ JavaScript authoritative Guide (sixth edition)--oo: Collection class and enumeration class, standard conversion method (p217-225)