JQuery :: Object Oriented - This.callMe(); Is Not A Function
May 29, 2010How to do this:
function MyObject(){
Error messages I am getting on above are: this.callMe(); is not a function callMe(); is not defined
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Object Oriented - SetChecked Is Not A Function?
Apr 10, 2009I'm pretty new to programming object oriented javascript and I'm wondering if I could get some quick advice.
Code JavaScript:
When I do checkAll(true), it checks all of the athletes, but, it throws an error saying:
Why is it saying setChecked is not a function?
New Object Oriented Design ?
Jul 30, 2011I was writing my classes in an old fashion until today when I came across a new design pattern. Javascript is not an established OOP like C++ or Java. It doesn't have any easy way to create classes and to make private/public methods or properties as well as class-constructor. But it could be done in many ways.
My old way of OO design in Javascript was like following:
Code:
Those who were trying to write constructor and access public vars from private or vice versa, you would have probably faced some minor difficulties. But it was doable.
Now, the challenge is how can we make things cleaner and better. Here's the procedure I came up with:
Code:
Object Oriented Javascript Programming
Feb 28, 2003I just released javascript lib that really helps to develop robust and clear js-scenarios following the OOP directions. The library is compatible with wide range of browsers on different platforms, including Netscape 4.x, Netscape 6.x, Netscape 7.x, Opera 6, Opera 7, Mozilla 1.0, IE 4, IE 5, IE 6.
View 3 Replies View RelatedAny Books For Object Oriented Javascript
Feb 15, 2006Any websites or good books to learn real heavy object oriented javascript?
View 1 Replies View RelatedOO JS And SoundManager2 - Wrap Around Object Oriented Js
May 9, 2010I will be the first to admit, I don't know much about JS and am just starting to wrap my mind around object oriented js. I have this small bit of code that has been giving me problems for days.
playlistItems[numItems-1] = soundManager.createSound({
id : songId,
url : $(this).attr('href'),
whileloading : player.whileloading,
onfinish: next
});
"next" is a function on the same object that playlistItems is defined on, but it doesn't ever seem to fire. I tried this.next as well, but it just gives me a runtime error....
JavaScript Object-Oriented Programming
Nov 4, 2001Can someone tell me all the OOP's that can be made from javascript.
View 3 Replies View RelatedThe Timer Class, For Object-oriented Timeouts
Nov 27, 2002The problems with the setTimeout and setInterval functions provided in Javascript are twofold. First, you can't call a local object method without losing your scope, and second, you can't pass objects to the function, since the function call is implemented as a string.
The Timer class solves these difficulties by employing a static array to store the parent object and function arguments until the function is called.
This class is provided as-is and pro bono, so go ahead and muck with it if you see things that could be done better.
Thanks to WA for giving me the idea for this (albeit indirectly)!
Updated 4/18/2003: Footprint decreased, minor code improvements.
Updated 5/3/2003: Minor comment clarification; no code changes.
Updated 5/10/2003: Minor code improvements.
// The constructor should be called with
// the parent object (optional, defaults to window).
function Timer(){
this.obj = (arguments.length)?arguments[0]:window;
return this;
}
// The set functions should be called with:
// - The name of the object method (as a string) (required)
// - The millisecond delay (required)
// - Any number of extra arguments, which will all be
// passed to the method when it is evaluated.
Timer.prototype.setInterval = function(func, msec){
var i = Timer.getNew();
var t = Timer.buildCall(this.obj, i, arguments);
Timer.set[i].timer = window.setInterval(t,msec);
return i;
}
Timer.prototype.setTimeout = function(func, msec){
var i = Timer.getNew();
Timer.buildCall(this.obj, i, arguments);
Timer.set[i].timer = window.setTimeout("Timer.callOnce("+i+");",msec);
return i;
}
// The clear functions should be called with
// the return value from the equivalent set function.
Timer.prototype.clearInterval = function(i){
if(!Timer.set[i]) return;
window.clearInterval(Timer.set[i].timer);
Timer.set[i] = null;
}
Timer.prototype.clearTimeout = function(i){
if(!Timer.set[i]) return;
window.clearTimeout(Timer.set[i].timer);
Timer.set[i] = null;
}
// Private data
Timer.set = new Array();
Timer.buildCall = function(obj, i, args){
var t = "";
Timer.set[i] = new Array();
if(obj != window){
Timer.set[i].obj = obj;
t = "Timer.set["+i+"].obj.";
}
t += args[0]+"(";
if(args.length > 2){
Timer.set[i][0] = args[2];
t += "Timer.set["+i+"][0]";
for(var j=1; (j+2)<args.length; j++){
Timer.set[i][j] = args[j+2];
t += ", Timer.set["+i+"]["+j+"]";
}}
t += ");";
Timer.set[i].call = t;
return t;
}
Timer.callOnce = function(i){
if(!Timer.set[i]) return;
eval(Timer.set[i].call);
Timer.set[i] = null;
}
Timer.getNew = function(){
var i = 0;
while(Timer.set[i]) i++;
return i;
}
Here's an example of the code in action:
function Ticker(){
this.count = 0;
this.timer = new Timer(this);
}
Ticker.prototype.tick = function(d){
this.count+=d;
window.status = ""+this.count;
this.timer.setTimeout("tick", 1000, d);
}
window.onload = function(){
var ticker = new Ticker();
ticker.tick(1);
}
Events - Convert Some Procedural Code To Be More Object Oriented
Jul 9, 2009I'm trying to convert some Procedural code to be more Object Oriented and I'm stuck...
The page is really simple:
It's just a big picture w/ a caption under it, and a few thumbnail pics off to the side, that when clicked, replace the big picture as well as swap out the caption for a new one.
In the code (external JS file):
I've got 2 arrays:
One that holds the thumbnail image file URLs, and the other that holds the captions.
And a function:
I've created an object prototype that I can instantiate in order to:
1.) create the event: do the actual swapping of the thumbnail, and the changing of the caption.
2.) and attach that event to the thumbnail's link onclick event handler.
The code below is the closest I've come to making it work. The problem is that when I click any of the thumbnail links it only executes the last event instead of the one that corresponds to the link that was just clicked. Hopefully someone can take a look at my code and let me know what I'm doing wrong.
Simplified version of the code:
The x,y,z variable assignments are only in the window.onload function for the sake of clarity, but the event object instantiation block has to be in there for anything to work at all.
I know that the event0,event1,event2 objects work, and are attached to the onclick handler because they will swap the last thumbnail and caption when I click any of the thumbnail links. Of course that's the problem now... any click only activates the last event. It's like it attached the last event to all the onclick event handlers.
In fact, if I only create the event0 object, it works like it's supposed to... but when I create the event1 object, it does what it's supposed to and it takes over for event0. Creating event2 makes it take over for all of them. Each subsequent event# object seems to attach its own addy[ ] and caption[ ] to each previous x[ ] link.
Object Oriented Programming - Make A Round Corners Script
Feb 15, 2012I am trying to make a round corners script in object oriented programming method. This is purely for learning purposes.
The script is no where near complete but I am already having problems with it.
I am trying out the techniques described in 'David Flanagan ' text book 'JavaScript: The Definitive Guide, 5th Edition'
This code is called from html page which once working will place a round container around element
The selector parameter in Custom_rounded_container function is defined because only the else part of the if statement in Custom_rounded_container is executing. I put this in because few people at other forums thought the problem was because of the selector parameter being undefined.
External Javascript file
Round Corners Script In Object Oriented Programming Method
Feb 12, 2012I am trying to make a round corners script in object oriented programming method. This is purely for learning purposes.
The script is no where near complete but I am already having problems with it.
I am trying out the techniques described in 'David Flanagan ' text book 'JavaScript: The Definitive Guide, 5th Edition'
This code is called from html page which once working will place a round container around element
Code:
Javascript functions below
Code:
Object Oriented JS - OO Programming - Create Search Objects Or Arrays
Feb 10, 2011Trying to figure out OO programming for JavaScript and I'm totally lost.
Here's what I'm trying to do:
I'm posting search data to a PHP form to run a query on a database.
The structure is sort of like this:
So I'm thinking I need to create search objects or arrays. Initially, I thought I could do something like this:
Code:
This doesn't seem to work. It says object not defined whenever I try to do something.
I've also tried creating a JSON object like this:
Code:
This will allow me retrieve the data like I want to:
Code:
The problem is I can't figure out how to add data to the JSON object without manually typing it in. I need to be able to loop through form elements on my HTML page and set them to these variables. I'm using jQuery and doing something like this:
Code:
Object Oriented - Use "var Self" Technique
Dec 22, 2009I am doing a script, like:
I have anonymous function "xhr.onreadystatechange = function() {}" in the method "this.update" of an object that receives 2 arrays through AJAX. I need these 2 arrays to be assigned to this.images and this.folders, respectively, through this anonymous function. I try to use "var self" technique, but it doesn't work.
Object.onclick=function() - Function To Be Called That Tells The Browser Where That Image Is Located In An Object
Jul 11, 2011I am making a small gallery script. When a user clicks an image, I would like for a function to be called that tells the browser where that image is located in an object. For example:
[Code]...
It works, I just don't like it because it is messy and it seems sensible that some workaround exists.
Object Methods - Assign A New Function To A Built-in Object In Firefox
Jul 1, 2009Can assign a new function to a built-in object in Firefox:
But IE and Opera don't have a MouseEvent or HTMLElement that can be set up in the same way. Can you do this in IE or Opera, or just Firefox, and maybe Webkit?
Passing Object Function Out Of Object?
Apr 24, 2009Obviously I'dont want "alert('undefined !?');" to happen.
<!DOCTYPE html PUBLIC
"-//W3C//DTD XHTML 1.0 Transitional//EN"
"http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
[code]...
JQuery :: Use Script Function On Object?
Sep 6, 2010[code]...
This won't work.
JQuery :: Object As Function Argument?
Jun 23, 2009I have used an object in the past as a function argument, but this was for a plugin that I wrote. Using it in the architecture of a plugin it worked. BUT, this time, I just want to write a normal function, but still use an object to set defaults and pass in changes to those defaults through as a param. Is this possible, or do I have to make this a jQuery function like $.myfunction() ?
[Code]...
JQuery :: Pass Object To Function?
Jan 6, 2010I have a function which controls my interface. If people click on alink with the class 'less' i would like a dive to slide up.My code roughly looks like this:
$
"a.less"
.livequery
[code]....
JQuery :: Passing Object To A Function?
Nov 30, 2010The following scenario:
var myobject = new object (settings);
$('#button').click(function () {
//execute a method from myobject (usually called with "this.methodName(),")
});
I don't know how to pass myobject to the anonymous jquery function. But I cannot execute the method without referencing it. How can I get this done?
JQuery :: Want To Update An Object Of Function From Outside?
May 18, 2011I m new to this forum.Here below is a part of code .What my requirement is This code is rendered first time now i have torefersh the USER[] of this options object from outside without refreshing the page .So how can i access this variable( self.options.users ) in an another file to refresh it ,like we use parent.opener.variablename ...
(function($) {
$.widget('ui.weekCalendar', (function() {
JQuery :: Pass Event Object To A Function?
Jun 23, 2011I have a custom function:
function myFunc(o){
o.css("color","red");
}
and then I have a jQuery event like this:
$("myButton").mouseenter(function(e){
myFunc(this);
});
How can i pass the element to the custom function and then do all the jQuery manipulation from there?
JQuery :: Array Object As Parameter To Function?
Oct 13, 2011This is my jquery response:
[
{ "depot":
{ "id": "D1",
[code]....
JQuery :: Passing An Object As A Function Parameter?
Jun 27, 2009I had a script that was acting unexpectedly because of a function parameter. I was trying to pass a jquery object through a function to attach some events. I was wondering if someone could tell me why this
didn't fly:
[Code]...
JQuery :: Call SetInterval Function With Some Object?
Sep 14, 2010can we call setInterval function in jquery with some object
View 1 Replies View RelatedJQuery :: Pass An Object To A Function And Not Getting The Results?
May 18, 2011I'm trying to pass an object to a function and not getting the results I need. If I get a reference to the object and pass it like so
[Code]...