Referring To An Already Defined Property In Object Literals?

Jan 9, 2010

I'm using closure to make a function return an object in the form of the literal.

function myFunction() {
return {
a : 'foo',


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How To Convert All UPPERCASE Literals To All MixedCase Literals

Oct 21, 2007

We have a system that creates web pages over which we have no control. But we DO have the ability to insert JavaScript into the web-page PRIOR to the web page actually displaying. (By the way, the User will always be using Internet Explorer as their browser.) The web pages create HTML Forms. The form field labels are always UPPERCASE. We would like to *automate* the changing of those literals so that they are always MixedCase. So is there any way to - in effect - create some JavaScript routine that we insert into every web page to scan and replace these literals - so that the User will only see MixedCase labels - instead of UPPERCASE labels?

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JQuery :: Different Behavior With Serialize And Object Literals?

Jun 20, 2010

my code:

GEvent.addListener(map, 'infowindowbeforeclose', function() {
var form1 = $('#window_form_tab1').serialize();
var name = form1.name_field;


and this is the form:

'<div id='window_div1' style='width: 300px; height: 300px; '>'+
' <form id='window_form_tab1'>'+
' <label>Tipo de espa├žo</label>'+


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Referring To Parent Object

May 6, 2003

I have an object, "A", which contains another object "B", as an attribute.

How do I get a hold of Object "A" from within "B"? i.e. I need to refer to the object that B is stored inside from within B's code. Is there some superclass equivalent of 'this' that I don't know about? ('parent'?!)

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Referring To Object Name Within Same Object

Jul 3, 2003

I have a user-defined object being used in a webpage, let's call it Bob. We instantiate bob, like this :

Objname = new Bob();

Now, of course, 'Objname' refers to the new Bob object. Here's my problem: when Bob is initially instantiated, it's created containing code that refers to itself. Specifically, it contains static text that refers to elements of itself. The problem is I need to get a hold of the actual text 'Objname' in order to do this.

This is all very abstract, but I can't really divulge any details without hitting you with a huge amount of code. Still, I hope my problem is clear. And, I (really!) don't want to instantiate Bob like this:

Objname = new Bob('Objname');

since it's really ugly. Any suggestions...?

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Object Scope - Add A Property To The Object To Store The Data Loaded?

Aug 5, 2011

I have an object with a single Method to load content from a xml file. The problem is... how do I add a property to the object to store the data loaded?? I tryed adding a simple Array inside the object, but didn't work.


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Best Practice For Referring To Node's "parent" JS Object?

May 10, 2011

Consider the following simplified example javascript code...

What's the "best" way to write that onclick method in its current context? I can think of a few ways to do it -- but they all seem fairly "dirty."

Have I gone stupid?

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New Object From User-defined Class In IE8?

Nov 18, 2010

I've been writing a slideshow script that I've had working perfectly on my mac in Chrome and Safari, however I went to look at it in IE8 and lo and behold it falls over. It says 'object doesn't support this property or method' in relation to the new SlideShow line in the main() function.

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How Can I Know If An Object Has A Property?

Oct 28, 2005

({}["toString"]) - function
alert("toString" in {}) - true

But I want to only find a property that is defined in the object - not in a prototype.

for(var prop in {}) { alert(prop); }; // toString not found.

It seems that operator 'in' is overloaded. 'in' during iteration: look in the property. 'in' in a boolean conditional: look in the object, then up the prototype chain.

I want a way to get only properties defined within the object itself, not it's prototype. Is there no simple way?

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Add A Property To A Object?

May 30, 2009

Is there some way to add a property to a object ?

Code JavaScript:
if (Object.__count__ == undefined)
{ = function {
// [url][/url]
count and return

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Determine Object From Property?

Sep 9, 2005

Is there a way to determine the object that a property is in? For

function MyClass() { ... }
MyClass.prototype.myFunc = function() { ... }

var obj = new MyClass();
var sameobj = SOMEFUNCTION(obj.myFunc);

So my goal is to get a reference to the object by just having the

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Aug 10, 2006

Some of the object properties in the Dojo Toolkit are set to objects but they are using syntax like this: = new function() { = someValue; = someFunction;

Is the property set to a new object and if so what is the "new function()" statment doing?

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Form Property And Object

Jul 20, 2005

With something like this : <form name="a"><input name="name"></form>
Is it possible to get the name of the form (a) and access the input object
(name) too?

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Change Value Of Object Property

Aug 11, 2009

I have a JS script that presents a series of "pages" with different questions inside a single HTML file, by rewriting certain <div>s. I have an object like this that contains the questions and information about answer labels etc (the idea is that this should be easy to modify for someone who doesn't know JS):


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How To Assign Variable Value As The Object Property Name?

Jul 23, 2005

How is it possible to take the value of a variable (in this case,
MODE_CREATE, MODE_UPDATE, etc) and use that as an object property name?

In the following example I want 'oIcon' object to have the properties:
mode1, mode2, and mode3.

This seems simple but I can't quite figure it out...

Any ideas anyone?

var MODE_CREATE = "mode1";
var MODE_UPDATE = "mode2";
var MODE_DELETE = "mode3";

var oIcon = {
MODE_CREATE: "create.gif"
, MODE_UPDATE: "update.gif"
, MODE_DELETE: "delete.gif"

var oTitle = {
MODE_CREATE: "Create a new item..."
, MODE_UPDATE: "Update this item..."
, MODE_DELETE: "Delete this item..."

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Javascript Object And Lost Property

May 8, 2006

I have situation that when my page is loaded i create js object
function Page() { = 0;
this.result = 0
this.resultCount =1;
this.currentPage =1;
MyPage= Page()
then in my javascript function i use object like this:

function getPage() {
if(!MyPage) {
MyPage = new Page();
return MyPage;

but there is one problem: MyPage lost one of the property, currentPage.
When i do alert(MyPage.cuurentPage) shows mi undefined. After object
initialization everything seems to be alright, currentPage is set to 1
but when i Try use MyPage in my js code is already set to undefined.
What happen? What I'm doing wrong?

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RegExp Object Property LastIndex

Sep 6, 2006

Given the following code and its execution to the last line:

var re = /beta/;
var string = "alphabetagamma";
var report = re.exec(string);

should not:

re.lastIndex = 9;

after the last line of execution?

On Firefox, Venkman continually reports zero.

Specification for JS 1.5 defines property lastIndex as follows:

The index at which to start the next match.
As of JavaScript 1.5, [it is] a property of a
RegExp instance, not the RegExp object.

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JQuery :: Check Each Property Of An Object?

Apr 20, 2011

i am locking for something to get all Propertie`s of an Object (with an each loop?)

<div id="blub" class="blah" name="blah"></div>


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JQuery :: How To Check Is The Object With The Css Property?

Oct 16, 2009


How to know the div have position property or not?

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Set A Specific Property On A Private Object?

Feb 16, 2009

I want to be able to set a property on a private object by giving the not notation path to the value. The difficulty is that this object is within closure so I can't access it directly to set the value the normal way (eg. dot.notation.path = 'new value'). This seems weird but I can't think of the obvious way.


// setter function
function set(path, change){
var privateObject = {
a: 'a',


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Object Error - Creating A New Property

Dec 5, 2011

I am doing javascript from a book called "Prentice Hall(which sounds very masonic) : Javascript by example".

my question is this. I am doing an practice dealing with "defining methods for an object" now i used this code verbatim


I did this code in the book exactly. I am just trying to warp my head around this and want to understand how is this an error when it is just the crating a new property.

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Missing Prototype Property In First New Object

Sep 28, 2009

I've ammended my code now so that I'm using objects, constructors and prototypes.

If I use the standard constructor.prototype.functionname = (){......} type of setup it works okay.

However I'm now experimenting with overwriting the prototype with a literal. As in the code below. i.e. constructor.prototype = {functionname : function() .......

Doing it this way my first new object instance fails. The subsequent new objects are fine.

I ran a check on the properties of the 1st object with '!hasOwnProperty and name in' and the result is that the prototype (or pointer to a prototype) is missing.

So the first new object of FontTrans (oH) has

1 property is Heading
9 property is Delay


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Adding Property To XMLHttpRequest Object In IE

May 1, 2007

I've created a small AJAX library for our application. We send the response data back as JSON in responseText. So far so good.

Before we invoke the response handler, I'm putting the eval'ed responseText in the request object like so:

req.respText = eval('(' + req.responseText + ')');
This works in FF but breaks in IE 6. (*gasp*)

I finally got the Microsoft Script Editor yesterday, so I could play with the values and see what was going on. Kind of... I'm still in the dark. For some reason, it won't let me add a property to req. Can anyone explain why/how it prevents me from doing so?

Conceivably I could add the eval'ed responseText to the response handler function, but that would break the API, and would require us to modify a bunch of existing functions.

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Access Object Property With Variable?

Apr 18, 2010

I need to acsess an object property via variables, but don't get ahead.


var property = height;

"height" is a property of the object "flower". Now, I need a possibility to access "flower.height" with my variable property, means -->"" I tried everything like "flower.[property]" "flower.['property']" etc. but nothing did help.

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JQuery :: Object Property Not Being Set Correctly

May 18, 2010

I'm trying to come up with a swipe gesture for part of the mobile version of my website. Right now, I'm just playing with mouse movements instead of the touch events so I can play with it on my computer rather than having to load the page up on my iPhone every time. Here's the problem: onmouseup, I run a calculation to determine where the closest element is to the edge of my container. Whichever one is the closest, I do a simple animate() to that element. It looks like this:


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Object Doesn't Support This Property Or Method

Nov 2, 2006

I'm trying to write a little script that disables the submit button on a form, changes the text of the button, and then submits the form.

Can anyone tell me why this works ok:

<input type="button" value="Submit" onClick="this.disabled=true;
this.value = 'Submitting...' this.form.submit();">

But when I try to make a function it doesn't work:

<script language="JavaScript">
function DisableButton(b) {
b.disabled = true;
b.value = 'Submitting...'

<input type="button" value="Submit" name="submit"

When I try this the button text is changed and the button is disabled, but the form doesn't submit. In IE I get an error that points to theline that says:


and the error:

Object doesn't support this property or method

What's the difference between doing this code directly in the onClick event and doing it in a function?

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