Use of JavaScript objects

1. Create an Object

1). Use {}

The object also has the object var obj = {name: "Arilife", Age:26,birthday:new Date (1984, 4, 5), addr: {street: "Huang Quan Road", Xno: "13 5 ",  //attribute Getstreet:function () {return This.street}//Method}};alert (Obj.addr.street); alert (Obj.addr.getStreet ());

2). New constructor created

A. The system's

var obj = new Object (); obj.name = "Chow Tai Fook"; obj.age = 21;obj.getage = function () {return This.age};alert (Obj.getage ());

B. A custom

function person (name, age) {this.name = Name;this.age = Age;this.getage = function () {return this.age};} Window. Person ("jeery", +), var p = new Person ("Tom", 23);

2. Understanding of related Concepts 1). Object:

L JavaScript objects are actually collections of attributes, deterministic, unordered, and cross-specific

var o = {      p1:3,      p2:function () {alert ("---");},      p3: [1, "abc"],      P4: {t: "AA"},      p1: "Xfzhang"};

alert (O.P1);//teacher

Overwrite the original P1, because the object's cross-specific characteristics

2). Properties of the object:

L can be dynamically added and deleted, and its value can point to any type of data

O.name = "Terry";d elete O.p1;//alert (o.name);//terry//alert (O.P1); Undefined

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Use of JavaScript objects