Use routines for arrays and objects in JavaScript

JavaScript arrays

The following code creates an array named cars:

1 //Way One:2 varCars =NewArray ();3 4Cars[0] = "Volvo";5CARS[1] = "BMW";6CARS[2] = "QQ";7 8 //Way Two:9 varCars =NewArray ("Volvo", "BMW", "QQ");Ten  One //Way Three: A varCars =Newarray["Volvo", "BMW", "QQ";

JavaScript Objects

Objects are separated by curly braces. Inside the parentheses, the properties of the object are defined in the form of name and value pairs (name:value). Attributes are separated by commas:

1 // Create object 2 var person = {id= "666666", firstname= "bills", Lastname= "Gates"};

The object (person) in the example above has three attributes: FirstName, LastName, and ID. Spaces and lines do not matter. Declarations can span multiple lines:

1  // Creating Objects 2 var person = {3     id= "666666",4     firstname= "Bills",  5     lastname= "Gates"6

Object properties are addressed in two ways:

1 name=person.lastname; 2 name=person["LastName"];

Use routines for arrays and objects in JavaScript