Creating Frogger Game - Collision Of Objects

Mar 16, 2010

I am creating a frogger game. When the frog image collides with a vehicle image, I wish for the frogs position to be reset back to the start. Here is my code which is currently not working:

// Frog Collisions: (CURRENTLY NOT WORKING)
var cvehicle=new Array(0,
[Code] .....

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Hangman Game - Set The Letter Squares To Be Objects Of A Button Class

Dec 10, 2009

In this game i have the letters as images and they are listed at the top in two rows.

This is the code

As this is not really the best way to do it, I was wondering if i could set the letter squares to be objects of a Button class. I just don't know how to do it.

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Creating A Pop-up Message When A Game Is Submitted?

Apr 4, 2010

what im trying to do is make a javascript pop-up message in real time alerting members who are online at that time to a game submitted i help run a fifa10 online league site and we are venturing into the 2v2 part of the site.

now when a player goes to the 2v2 page they are presented with a submit button to submit a 2v2 game to the system. then this already shows up on the pagebut what we are after is a little pop up box which after the game button is pressed to submit the game the pop-up shows to the whole site that a 2v2 game has been submitted for playing.

we want this so you dont have to sit on the 2v2 page to wait for a submitted game.

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Creating A Game - Object Changes By Itself - Shared Memory ?

Nov 6, 2011

I am creating a game in JavaScript!

It is going to be a clone of the game ChuChu Rocket! that I used to play on the Dreamcast.

The game is set up so that the levels sit inside a nested array of objects, like your typical JSON string. So that within levels[] there are objects with level names, an array of moveable items, an array of arrows you can place, etc.

I have set it up so that when the level is loaded in to the DOM, it also duplicates a part of the object, the part responsible for the positioning of the moveable items on screen so that when they are animated, and if there is a fail scenario (cat eats mouse, cat gets to rocket before mouse) you should be able to reset and it remembers your coordinates.

From what I have learned in my years of studying and using JavaScript, the following should always hold true: a=1; b=a; b++; // b would become 2, a would stay as 1 (they are separate variables)

I seem to have found an exception to this rule.

When creating a level, I duplicate the part of my object called o.chuchu and I call it o.chuchuMoving

If I make a change to anything in o.chuchuMoving, it also changes o.chuchu.

o.chuchu and o.chuchuMoving are arrays within the object. Formatted like this: [0,0,1],[1,0,1],[2,0,1],[3,0,1] ... etc

If I tell my object the following: o.chuchuMoving[0][0]=1... then o.chuchu[0][0] also becomes 1.

Please check the code at [url] when you get a moment

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Creating An Array Of Objects

Oct 3, 2011

As they all have the same property set but with different values I thought I'd try creating a servo object, the create an array of servo's but I don't think I'm getting anywhere fast. Heres what I have

<!DOCTYPE html PUBLIC "-W3CDTD XHTML 1.0 TransitionalEN" "">
<html xmlns="">
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<title>Untitled Document</title>

Once this is done and I've got all the servo objects created with their properties, I'm hoping to be able to search for all servo's with a set property i.e all servo's with servo.application = 1 would that be possible, if not I geuss I'd be wasting all our time trying to create classes I can't use the way I'd like.

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JQuery :: Creating Objects Within Each()

Oct 7, 2010

I have a tab compopenet object that works by passing a dom element to a constructor... which then finds all the relative elements to that element using .find() and adds the necessary behaviour. Now, since I have multiple tab components on the same page, I'm using each() to iterate through the dom elements and pass each into the tab component constructor function.


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Creating True Copies (of Objects) In JS (possible?)

Jul 20, 2005

Lets say I have this array:

a1 = [1,"2",new Array(2.5,3,3.5),4];

And I apply slice(0) on it, to create a copy:

a2 = a1.slice(0);

But this isn't a true copy. If I go a1[2][1] = 42, and then
alert(a2[2][1]) I will see 42 there too. I'm doubting, but I was
wondering if there is a general solution to this problem?

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JQuery :: Creating Objects From Within .each Question?

Oct 7, 2010

I have a tab compopenet object that works by passing a dom element to a constructor... which then finds all the relative elements to that element using .find() and adds the necessary behaviour.Now, since I have multiple tab components on the same page, I'm using each() to iterate through the dom elements and pass each into the tab component constructor function.[code]This works fine for my purposes, but after running my code through JSLint and researching here (URL...), I've been made aware that I'm pretty much throwing these objects away, since I'm not assigning them to a variable.My question really is; is this particularly bad practice under the circumstances? If I assigned the object to a variable within .each(), I'd surely be overwriting that varibale with each iteration and essentially doing the same thing?

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Dynamically Creating And Naming Objects?

Oct 13, 2010

I've got an input with a value. The input is called 'command2' and I want to send it's value to the 'rover2' object (although I don't know if that object exists yet). I test and say if(rover2){... and if not then I create the object/if so then I insert the value.Question is: I want to do:Code JavaScript:var rover2 = new Rover();but I want to pass the name of the new object by association, so in effect:Code JavaScript:var "rover"+i = new Rover();How would you do that? So that the objects and their names are generated dynamically (or [perhaps a better explanation] so that the string value of a variable can be used as the name of new variable/object)?PS Bonus marks: If I hold HTML fragments as an object and those fragments include inputs, is the value of the input collected as well? i.e. if I have

Code HTML4Strict:
<input id="foo" type="text" />


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Creating Craps Game - After Using The Error Console There's An Error With Document.forms [0].thrower.value Not Being Defined?

Oct 19, 2010

I am working on a simple javascript craps game program. I need some advice since it won't display who the winner is, keep tally of who wins/loses, and the number of total games played. After using the error console there's an error with document.forms [0].thrower.value not being defined.

<title> JavaScript Craps Game</title>[code]....

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JQuery :: Creating Objects On The Page To Load?

May 10, 2010

if I am loading content into a div using the get feature of jquery, and that content has some clickable objects in it will jquery recognize those as well? What I am doing is building a site that tracks bugs on our software. The site pulls the bugs from a mysql db and displays in a table format. There's an edit link which passes the record id number of that bug (via ajax) to a php file, where a form is filled in with the bug data and passed back, a hidden div is then shown with the form in it. Part of the code I pass back has a submit button and a close button (css styled anchors) and I'm using the same process on them as I am on the edit link but not getting any results. My script looks like this:

<script src="js/jquery.js"></script>
<script language="javascript">
//hide edit form


how it works. Does it sneak peek the page after it loads and get all the objects into some sort of array? I'm thinking it is doing that and because I am adding other object through AJAX it is not seeing those, since the page is not being reloaded.

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JQuery :: Creating Multiple Objects In An Each() Loop?

Sep 16, 2011

I have to stuff multiple objects in global var populated in a foreach loop and seperated by a comma.The loop is:

// GlobalG.objects;
$('.class').each(function() {
var title = $(this).text();
var src = $(this).attr('src');


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Creating And Managing Unknown Numbers Of Objects?

Jan 30, 2011

ok, so I can make an object, I can also make a new instance of that object and have it running around the screen at the same time.What I'm a bit confused about is how to go about things when I want X number of these objects.So instead of making objects seperately I need a loop. Instead of referring to each object seperately every time I want to redraw it, I want to loop through all instances of the object.Except I can't quite see how one goes about doing this.

for (i = 0;i <= 10; i++) {
var dot + i = new Dot;


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Creating Instantatable Objects Using Pure JSON? -- No Prototyping!

Apr 23, 2007

I've been pretty infatuated with JSON for some time now since
"discovering" it a while back. (It's been there all along in
JavaScript, but it was just never "noticed" or used by most until
recently -- or maybe I should just speak for myself.)

The fact that JSON is more elegant goes without saying, yet I can't
seem to find a way to use JSON the way I *really* want to use it: to
create objects that can be instantated into multiple instances without
prototyping. I've seen (and used) JSON for singleton object instances
-- this not a problem and this is how it works right out of the gate.

But given the following custom object written the past "normal" way, I
would like to write it in JSON format, and then be able to create new
instances from the one definition. Here's an example using the "old
way" most who have been writing JavaScript for years have seen:

function Two( x, y ) {
this.x = x;
this.y = y;

Two.prototype.sum = function () { return this.x + this.y }
Two.prototype.max = function () { return this.x this.y ? this.x :
this.y }
Two.prototype.min = function () { return this.x this.y ? this.y :
this.x }
Two.prototype.pow = function () { return Math.pow( this.x, this.y ) }

Now, I know I can get all "fancy" with the above and do either this:

Two.prototype = {
sum : function { return this.x + this.y },
max : function () { return this.x this.y ? this.x : this.y },
min : function () { return this.x this.y ? this.y : this.x },
pow : function () { return Math.pow( this.x, this.y ) }

Or this:

function Two( x, y ) {
// Properties.
this.x = x;
this.y = y;

// Methods.
this.sum = function () { return this.x + this.y }
this.max = function () { return this.x this.y ? this.x : this.y }
this.min = function () { return this.x this.y ? this.y : this.x }
this.pow = function () { return Math.pow( this.x, this.y ) }

(The later seems to work without prototyping...!)

But neither are really as close to pure JSON as I would like, so that
I can instantate those:

var hisPair = new Two( 11, 22 );
var herPair = new Two( 33, 44 );

What I'd like is a way in PURE JSON to be able to create the Two class
(as an example) using pure JSON. I've not seen anything yet on the
web that addresses this directly aside from some pages which require
you to include another JS to allow "deep embedding" of classes using
other helper "classes" (that are created the "old way" it seems), etc.

The best I've found so far on using pure JSON to create a class that
allows *multiple* instances is something like this:

function Two( x, y ) {

var class = {
x : x,
y : y,
sum : function { return this.x + this.y }
max : function () { return this.x this.y ? this.x : this.y }
min : function () { return this.x this.y ? this.y : this.x }
pow : function () { return Math.pow( this.x, this.y ) }

for (var element in class) this[element] = class[element];


Now *THAT* works, but it's still not as "pure" I would like. But it's
acceptable for now, I guess, since I *am* creating the entire "class"
as a JSON object, and I consider the outside function "wrapper" as the
necessary "constructor." But I keep wondering... There HAS to be a
better way.

I'm just wondering if anyone knows of a place that discusses JSON used
in situations like the above. Again, I've seen an ABUNDANCE of pages
and sites that discuss JSON in Singleton usage, but nothing that
discusses it as I am wanting here.

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Still Have Problems With Collision Detection

Aug 30, 2006

So I temporarily gave up on my breakout game (code) due to getting frustrated and a short trip, but it's time to finish it. After all, this is the only thing that's left to fix/do. The ball does not bounce correctly off the sides (the code in the checkBlocks function). It only/always seems that the first if statement evaluates to true, and when it gets to the second if statement, it doesn't evaluate to true because the other one already reversed the ball's direction. So how can I correctly determine where the ball came from?

Also, sometimes the ball gets stuck. For example, if you happen to hit the ball with the paddle in the bottom left corner, the ball will bounce back and forth along the left side of the board. I'm not sure how to fix this either.

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Collision Detection Not Working - Causing Infinite Loop

Jan 18, 2010

I cant get collision detection to work. I tried but it always caused an infinite loop.

Heres the code.
<html><!-- main file.--><head>
<title>lightning generator</title>
<canvas id='world' width='500' height='500' style='border: 1px solid black; padding:0;'>
</canvas><script type="text/javascript" src='world.js'></script>
[Code] .....

In the end of world.bolt.cpath,there should be a way to use the local varis X and Y, and world.ground.js's world.ground.level[] to detect it. sorry for the gigantic length.

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JQuery :: Modifying Splatter Plugin To Avoid Collision/overlap

May 25, 2011

jQuery Splatter by Cory Schires

I was looking for something that would allow me to scatter elements (divs w/ background-images) behind text. Splatter is almost what I want, but I would need:

- no overlap in the positioning of elements

- keep the elements inside the container

- remove the default asterisk completely

As I have varying article dimensions, this keeps the splatter area the right size:


height: $("#article-text").height(),
width: $("#article-text").width()

Could the collision detection code in jQuery UI Position be used somehow?

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JQuery :: Modifying Splatter Plugin To Avoid Collision/overlap?

May 25, 2011

I was looking for something that would allow me to scatter elements (divs w/ background-images) behind text. Splatter is almost what I want, but I would need:

- no overlap in the positioning of elements
- keep the elements inside the container
- remove the default asterisk completely

As I have varying article dimensions, this keeps the splatter area the right size:

height: $("#article-text").height(),
width: $("#article-text").width()

Could the collision detection code in jQuery UI Position be used somehow?

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Creating A Dice Game Where 6 Dice Are 'rolled' By You And 6 Dice Are 'rolled' By The Player

Nov 14, 2011

Create a game where 6 dice are 'rolled' by you and 6 dice are 'rolled' by the player (simulated by the click of a button). Add up both rolls. The goal is to come as close to a score of 100 as possible, without passing 100. Have a STOP button to signify when you are ready to stop rolling and compute the winner. The highest score under 100 wins. Display the number of times you win and the number of times the computer wins using javascript. So far I have the following code, however, my dice images are not working(they display as little broken symbols when I run the game). The game itself is running just fine but I can't figure out how to get the game to do the "Add up both rolls" step and beyond.

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Objects Under Mouse - Return An Array Of All Objects Underneath A Certain Point

Apr 17, 2011

Is there a way in Javascript or Jquery to return an array of all objects underneath a certain point, ie. the mouse position. Basically, I have a series of images which link to various web pages but I have a large semi transparent image positioned over the top of the other images. I want to find the href of the background image that the mouse pointer clicks over.

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JQuery :: Extending Objects With Internal Objects?

Sep 5, 2009

Is there a better way to extend object with internal objects?

$.fn.bestShow = function(s) {
var d = {
width: 0,
height: 0,
order: "numeric",
orderBy: "",


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Maths Game

Oct 3, 2003

Have a look at this maths game I made. It tests you on adding, subtracting, multiplying and dividing and has three different levels.

Note-you must save the code below as mathsgamefinal.htm for the reset button to work.



<meta http-equiv="Content-Type" content="text/html; charset=windows-1252">

<meta http-equiv="Content-Language" content="en-gb">



<body bgcolor="#FF0000">

<script type="text/javascript">

function next1(){

var outof=document.getElementById('outof').value;

if(document.getElementById('next').value=="Next" && document.getElementById('type').value=="a"){document.getElementById('next').value='Enter' add(); document.getElementById('answer').value='answer'}
else if(document.getElementById('next').value=="Next" && document.getElementById('type').value=="m"){document.getElementById('next').value='Enter' times(); document.getElementById('answer').value='answer'}
else if(document.getElementById('next').value=="Next" && document.getElementById('type').value=="t"){document.getElementById('next').value='Enter' minus(); document.getElementById('answer').value='answer'}
else if(document.getElementById('next').value=="Next" && document.getElementById('type').value=="d"){document.getElementById('next').value='Enter' divide(); document.getElementById('answer').value='answer'}

else if(document.getElementById('next').value=="Enter" && document.getElementById('answer').value==(cr)){ document.getElementById('question').value='Correct' document.getElementById('next').value='Next' document.getElementById('outof').value=parseInt(document.getElementById('outof').value)+1; document.getElementById('score').value=parseInt(document.getElementById('score').value)+1; pc();}

else{ document.getElementById('question').value='Wrong. Answer= '+cr; document.getElementById('next').value='Next' document.getElementById('outof').value=parseInt(document.getElementById('outof').value)+1; pc();}


function add(){
ea1=(Math.floor(Math.random() * (1 - 10)) + 10);
ea2=(Math.floor(Math.random() * (1 - 10)) + 10);
ma1=(Math.floor(Math.random() * (21 - 49)) + 49);
ma2=(Math.floor(Math.random() * (21 - 49)) + 49);
ha1=(Math.floor(Math.random() * (111 - 299)) + 299);
ha2=(Math.floor(Math.random() * (111 - 299)) + 299);

if(document.getElementById('level').value=="e"){document.getElementById('question').value=ea1+' plus '+ea2; cr=ea1+ea2}
if(document.getElementById('level').value=="m"){document.getElementById('question').value=ma1+' plus '+ma2; cr=ma1+ma2}
if(document.getElementById('level').value=="h"){document.getElementById('question').value=ha1+' plus '+ha2; cr=ha1+ha2}
function times(){
em1=(Math.floor(Math.random() * (2 - 10)) + 10);
em2=(Math.floor(Math.random() * (2 - 10)) + 10);
mm1=(Math.floor(Math.random() * (11 - 19)) + 19);
mm2=(Math.floor(Math.random() * (6 - 12)) + 12);
hm1=(Math.floor(Math.random() * (21 - 29)) + 29);
hm2=(Math.floor(Math.random() * (21 - 29)) + 29);

if(document.getElementById('level').value=="e"){document.getElementById('question').value=em1+' times '+em2; cr=em1*em2}
if(document.getElementById('level').value=="m"){document.getElementById('question').value=mm1+' times '+mm2; cr=mm1*mm2}
if(document.getElementById('level').value=="h"){document.getElementById('question').value=hm1+' times '+hm2; cr=hm1*hm2}


function minus(){
et1=(Math.floor(Math.random() * (10 - 20)) + 20);
et2=(Math.floor(Math.random() * (1 - 10)) + 10);
mt1=(Math.floor(Math.random() * (50 - 99)) + 99);
mt2=(Math.floor(Math.random() * (20 - 50)) + 50);
ht1=(Math.floor(Math.random() * (350 - 1000)) + 1000);
ht2=(Math.floor(Math.random() * (350 - 1000)) + 1000);

if(document.getElementById('level').value=="e"){document.getElementById('question').value=et1+' minus '+et2; cr=et1-et2}
if(document.getElementById('level').value=="m"){document.getElementById('question').value=mt1+' minus '+mt2; cr=mt1-mt2}
if(document.getElementById('level').value=="h"){document.getElementById('question').value=ht1+' minus '+ht2; cr=ht1-ht2}

function divide(){
ed1=(Math.floor(Math.random() * (2 - 10)) + 10);
ed2=(Math.floor(Math.random() * (2 - 10)) + 10);
md1=(Math.floor(Math.random() * (11 - 19)) + 19);
md2=(Math.floor(Math.random() * (11 - 19)) + 19);
hd1=(Math.floor(Math.random() * (21 - 29)) + 29);
hd2=(Math.floor(Math.random() * (21 - 29)) + 29);

if(document.getElementById('level').value=="e"){document.getElementById('question').value=ed3+' divided by '+ed2; cr=ed1}
if(document.getElementById('level').value=="m"){document.getElementById('question').value=md3+' divided by '+md2; cr=md1}
if(document.getElementById('level').value=="h"){document.getElementById('question').value=hd3+' divided by '+hd2; cr=hd1}

function answerreset(){

function pc(){
document.getElementById('scorepercent').value=Math.round(document.getElementById('scorepercent').val ue);

<table border="0" width="198" height="180" bordercolor="#000000" style="background-color: #FFFF00; border-style: solid">


<td height="33" width="99" colspan="2">

<p align="center">

<select size="1" name="type" id='type'>

<option value="a" selected>Add</option>

<option value="t">Take away</option>

<option value="m">Multiply</option>

<option value="d">Divide</option>



<td height="36" width="99" colspan="2">

<p align="center">

<select size="1" name="level" id=level>

<option value="e" selected>Easy</option>

<option value="m">Medium</option>

<option value="h">Hard</option>





<td height="36" width="198" colspan="4">

<p align="left">

<input type="button" name="T1" id='question' value="Click next to begin" style="background-color: #FFFF00; border: 0 solid #FFFF00">





<td height="33" width="66">

<p align="center"><input type="text" name="answer" size="6" id='answer' onclick=answerreset()></td>

<td height="36" width="66" colspan="2">

<p align="center"><button onclick='next1()' id='next'>Next</button></td>

<td height="33" width="66">

<p align="center"><button onclick='window.location="mathsgamefinal.htm"'>Reset</button></td>



<td height="36" width="66">

<p align="center">Score %:</td>

<td height="33" width="66" colspan="2">

<p align="center">Score Marks:</td>

<td height="33" width="66">

<p align="center">Out of:</td>



<td height="33" width="66">

<p align="center"><input type="button" name="T1" size="3" id=scorepercent value="0"></td>

<td height="33" width="66" colspan="2">

<p align="center"><input type="button" name="score" size="3" id=score value="0"></td>

<td height="36" width="66">

<p align="center"><input type="button" name="outof" size="3" id=outof value="0"></td>


Any feedback would be much apprieciated...

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Javascript Game

Sep 25, 2006

I have been making a game in javascript. The game works now but I would like to know if the user has completed the game. Hope some one have an idea on how to find out if the user has completed the game. Code:

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The Caption Game

Feb 14, 2003

I am trying to get a line of text that a user types into a textfield to appear somewhere else on the screen. AT teh moment when the user presses submit it refreshes the page and does write the text line to the screen but it is a brand new page and I lose all my content.

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Card Game Javascript

Jul 20, 2005

Has anyone got a script to run a higher or lower card game on a web page.

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AJAX :: Create A Tic Tac Toe Game ?

Nov 18, 2009

I am trying to create a tic tac toe game using jQuery. In the game the player starts a game and when someone else does the same they can then play each other.

So far I am stuck for ideas as to how to construct the javascript. This is the javascript i have so far.


Should i use a plugin? I thought it would be easier..

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