3 ways to create JavaScript objects

3 ways to create JavaScript objects

Method One: Define and create object instances directly

var obj = new Object (); Creating an Object instance

Add attribute Obj.num = 5; Add Property

Obj.fn = function (CIN) {return cin;} Add method

Ways to Access Objects: Objectname.methodname ()

Accessing the properties of an object: Objectname.propertyname

Method Two: Define the object with a function and create an object instance

function Class () {

Add Property

This.val = 1;

Add method

This.fn = function () {

Return ' FN ';

}

}

var obj = new Class (); Creating an Object instance

Ways to Access Objects: Objectname.methodname ()

Accessing the properties of an object: Objectname.propertyname

Method Three: Literals Create object instances directly

Literals creating an object instance is a simplified method.

var obj = {}; Create an empty object

var obj = {

Num: ' 2 ',//This is the Set object property

Fn:function () {

....//This is the Set object method

}

}

Ways to Access Objects: Objectname.methodname ()

Accessing the properties of an object: Objectname.propertyname

---test instance

function www ()
{
var temp = {A: "A", B: "B", C: "C", Fn:function () {
Alert ("FN");
}};

alert (TEMP.B); B

Alert (temp["a"]); A

Temp.fn (); Fn

temp["FN"] (); Fn
}

Through the object name. property name, Object name. Method Name () can be accessed

Object name [method name] () can also be accessed by object name [property name]

3 ways to create JavaScript objects