Javascript Objects

Javascript variables:       var person = “John Doe”;

Javascript objects are variables too. But objects can contain many values.The values are written as name : value pairs.

eg. var person = {firstName:”John”, lastName:”Doe”, age:50, eyeColor:”blue”};

Object properties can be both primitive values, other objects, and functions.

Creating new objects:
1) Using an Object Literal
2) Using the JavaScript Keyword new
3) Using an object constructor

Javascript Properties:

1)  person.age
2)  person[“age”]
3)  x = “age”; person[x]

Delete properties:    delete person.age

Javascript Object Prototypes:

Every JavaScript object has a prototype. The prototype is also an object.
All JavaScript objects inherit their properties and methods from their prototype.

eg. Person.prototype.nationality = “English”;
eg. = function()  {
return this.firstName + ” ” + this.lastName;

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