Object-Oriented Planetary Data Presentation : Objects Object Oriented « Language Basics « JavaScript DHTML

Object-Oriented Planetary Data Presentation

JavaScript Bible, Fourth Edition
by Danny Goodman 

John Wiley & Sons CopyRight 2001

<TITLE>Our Solar System</TITLE>
<!-- start script
// method definition
function showPlanet() {
    var result = "<HTML><BODY><CENTER><TABLE BORDER=2>"
    result += "<CAPTION ALIGN=TOP>Planetary data for: <B>" + this.name + "</B></CAPTION>"
    result += "<TR><TD ALIGN=RIGHT>Diameter:</TD><TD>" + this.diameter + "</TD></TR>"
    result += "<TR><TD ALIGN=RIGHT>Distance from Sun:</TD><TD>" + this.distance + "</TD></TR>"
    result += "<TR><TD ALIGN=RIGHT>One Orbit Around Sun:</TD><TD>" + this.year + "</TD></TR>"
    result += "<TR><TD ALIGN=RIGHT>One Revolution (Earth Time):</TD><TD>" + this.day + "</TD></TR>"
    result += "</TABLE></CENTER></BODY></HTML>"
    // display results in a second frame of the window
// definition of planet object type;
// 'new' will create a new instance and stuff parameter data into object
function planet(name, diameter, distance, year, day) {
    this.name = name
    this.diameter = diameter
    this.distance = distance
    this.year = year
    this.day = day
    this.showPlanet = showPlanet  // make showPlanet() function a planet method
// create new planet objects, and store in a series of variables
var Mercury = new planet("Mercury","3100 miles", "36 million miles", "88 days",
 "59 days")
var Venus = new planet("Venus", "7700 miles", "67 million miles", "225 days", "244 days")
var Earth = new planet("Earth", "7920 miles", "93 million miles", "365.25 days","24 hours")
var Mars = new planet("Mars", "4200 miles", "141 million miles", "687 days",
 "24 hours, 24 minutes")
var Jupiter = new planet("Jupiter","88,640 miles","483 million miles",
 "11.9 years", "9 hours, 50 minutes")
var Saturn = new planet("Saturn", "74,500 miles","886 million miles",
 "29.5 years", "10 hours, 39 minutes")
var Uranus = new planet("Uranus", "32,000 miles","1.782 billion miles",
"84 years", "23 hours")
var Neptune = new planet("Neptune","31,000 miles","2.793 billion miles",
"165 years", "15 hours, 48 minutes")
var Pluto = new planet("Pluto", "1500 miles", "3.67 billion miles", "248 years", "6 days, 7 hours")
// called from push button to invoke planet object method
function doDisplay(popup) {
    i = popup.selectedIndex
    eval(popup.options[i].text + ".showPlanet()")
// end script -->
<H1>The Daily Planet</H1>
<P>Select a planet to view its planetary data: 

<SELECT NAME='planetsList' onChange='doDisplay(this)'>


Related examples in the same category

1.Object utility: create, parse and profile
2.Define Object, use its instance
3.Define and use object
4. Creating an Object and Using Object Instance Properties and Methods
5.The Book Object Definition
6.Complete Example of Using the employee, client, and project Objects
7.Source Code for the showBook() Example
8.Using the Book Object Constructor
9.Creating Objects Dynamically
10.Object to array
11.Utility class for JavaScript class definition
12.Create an object and add attributes
13.Use for in loop to display all attributes from an object
14.Display the properties from an object one by one
15.An object and its constructor
16.Use function as the object constructor