자바 스크립트

null

var obj = new Object();

or var obj = new Object;

or var obj = {};

obj.name = "Simon"

var name = obj.name;

obj["name"] = "Simon";

var name = obj["name"];

obj["for"] = "Simon";

var obj = {

    name: "Carrot",

    "for": "Max",

    details: {

        color: "orange",

        size: 12

    }

}

> obj.details.color

orange

> obj["details"]["size"]

12

.prototype

인스턴스된 모든 객체에서 공유할 수 있는 객체

function personFullName() {

    return this.first + ' ' + this.last;

}

function personFullNameReversed() {

    return this.last + ', ' + this.first;

}

function Person(first, last) {

    this.first = first;

    this.last = last;

    this.fullName = personFullName;

    this.fullNameReversed = personFullNameReversed;

}

function Person(first, last) {

    this.first = first;

    this.last = last;

}

Person.prototype.fullName = function() {

    return this.first + ' ' + this.last;

}

Person.prototype.fullNameReversed = function() {

    return this.last + ', ' + this.first;

}

Object.prototype

.toString()

> var a = new Array();

> a[0] = "dog";

> a[1] = "cat";

> a[2] = "hen";

> var a = ["dog", "cat", "hen"];