IE, XML, Objects

Jan 3, 2006

I'm trying to use the following code to load xml files:

ImportXML = function (ts) {
this.file = ts;
if (document.implementation &&
document.implementation.createDocument) {
this.doc = document.implementation.createDocument("", "", null);
this.doc.obj = this;
this.doc.onload = this.callBack;
this.doc.load(this.file);
} else if (window.ActiveXObject) {
this.doc = new ActiveXObject("Microsoft.XMLDOM");
this.doc.onreadystatechange = this.ready;
this.doc.obj = this;
this.doc.load(this.file);
} else {
alert("Error");
}
}
ImportXML.prototype.ready = function () {
if (myDoc[counter].readyState == 4) this.obj.callBack();
}
ImportXML.prototype.callBack = function () {
alert('loaded');
}

var xmlDoc = new ImportXML("bar.xml");

The problem I'm having is with the second line that reads
this.doc.obj = this;

IE tells me that object doesn't support this property or method. How is
it possible to get a reference to the object (xmlDoc) in the prototypes
'ready' and 'callBack" with IE?

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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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Sep 5, 2009

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

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

[Code]...

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Aug 3, 2005

I am trying to figure out how to use objects properties in my code so
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Jul 23, 2005

Where is the list of js objects (Anchor, Applet, document, etc)? It's not in the Netscape Guide or Core documents.

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Is It Possible To Loop Through All Objects?

Jul 20, 2005

If you have a javascript interpreter running in an environment unknown
to you (as in what objects it exposes to the language) is it possible
to loop through all objects in some way?

This is a non-browser environment, specifically the scripting engine
for doing xslt extensions in msxml.

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Extending The Objects In IE6-8?

Jan 22, 2011

I have the following code:

var img = new Image();
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I've tried Image.prototype.myProperty and a few other things. It seems IE just doesn't want me extending the Image object.

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Using Arrays As Objects?

Jul 4, 2011

"When we combine FUNCTIONS with OBJECTS we get METHODS". Then he creates an empty ARRAY:

var a = [];

then he uses the "push() method" to add elements to the array.

a.push(1,2,3);

uh, methods are for *objects* right? Yet he is using them on an ARRAY.how an array can magically becomes an object that is manipulated by a "method"?I mean, the array is still an array, no? It never actually becomes an object, right? Yet we still use a *method* to manipulate it. See my conceptual quandry?

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Mar 10, 2007

I've often write javascripts that use this rather common code to get all tags in an XHTML document:

var alltags = document.getElementsByTagName('*')
... and then use a for loop to access the elements as an array, for example:
for (i=0;i<alltags.length;i++) {
elementClass=alltags.className
[i]Do stuff
}

This has always seemed to work in the past, but I recently learned that the getElementsByTagName method returns a DOM NodeList, not an array. I'm currenly working on a project that needs to access the children of an element conditionally upon its class.

I have three questions. First: How do I declare a global variable to be a DOM NodeList object? It wouldn't be assigned until called from a function, so something akin to var elementList = document.getElementsByTagName() in my global declarations is out of the question. Is there something like var elementList = new NodeList() in javascript? (I know that I can assign it in a function without the var and it will be global, but other people may have to work with this code, and I'd like to have it clearly declared at the head of the program.)

Second question: Assuming alltags is a NodeList returned from a getElementsByTagName call, which of these is proper? This:

childElements = alltags[i].getChildNodes()
... or this:
childElements = alltags.item(i).getChildNodes()
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Arrays Vs. Objects

Jun 20, 2007

I recently had a problem where I needed to build up an array of strings, that would be join()ed into a string when the array building was complete. however, each value could only be in the array once.

This was a problem for a few reasons. Once a value has gone into an array the only way to check for it that works cross-platform is to scan the array looking for the value. FireFox has the every() and some() functions but they don't work in anything else.

Using an object to simulate an assocaiative array would allow me to avoid this problem by storing key/values with the keys having the same value as the value I was storing. I could then use the (a in b) construct to check that I had not already added a value.

However, array type methods won't work with objects, so I had no access to size () or join () meaning I'd have to manually build the string by iterating over the object.

My solution was to use an array object, but to store the provided data i nboth the array proper and as a property of the array object.


var myArray = new Array;

function addVal (val)
{
if (!(val in myArray))
{
myArray [val] = 1;
myArray.push (val);
}
}

addVal ('one');
addVal ('two');
addVal ('three');
addVal ('one');
addVal ('two');
addVal ('three');

console.log (myArray.length);
console.log (myArray.join (', '));


This approach does use up more memory but it does give me the advantages of both arrays and objects for little extra work. (if you don't have FireBug then replace console.log with alert)

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Dec 20, 2005

I know if I use this code:

var arrTD = document.getElementByType('td')

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Now what is the best way to access each object and see what it contains. I would like see which properties each object has and what their values are. I also guess there could be some other objects within the TD object and maybe even some events and methods.

Now I have been reading an on-line reference about DOM, but I think it is a little dated.

http://www.w3schools.com/htmldom/default.asp

For example I know that a <TD> can contain class="something" but I could not find a property called class, but it did list others like id, align etc.

I would like to learn how to access and view the contents of a DOM object.

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Apr 22, 2010

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I have tried a lot of things:

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Jan 5, 2011

I tried to set an onclick event with:

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Could anyone explain why I cannot use variables as DOM objects in order to avoit each time a tree search document.getElementById("a")? Bellow is given the code with explanation when it works and when it fails.

[Code]...

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May 29, 2003

Does anyone know of any generic code to clone an object (which only contains properties), which copies by value, not just reference?

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Oct 28, 2003

I am dabbling with objects and have successfully created an object with various properties, one of which is an Array, and all is fine. the Question I have is can I make an Array of objects? I have the following object:

dataSeries.Type = value
dataSeries.Name = value
dataSeries.dataPoints[n] = Array of values
dataSeries.color = value

What I would like to do is have an Array of multiple objects supposedly like:

dataSeries[0].Type = value
dataSeries[1].Name = value
dataSeries[2].dataPoints[n] = Array of values
dataSeries[3].color = value

Is this possible?

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May 30, 2005

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Jul 3, 2005

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I would like to know if there is a way to serialize this array, send it as a string, then deserialize it on the other side, resulting with the data structure again I am trying to avoid doing the serialization myself.

Each entry in the array holds an object of type Person:

function Person(name, age, children) {
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this.age = age;
this.children = children;
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Is this sort of thing possible?

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Sep 30, 2006

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For example, let's say that I create a new Date object like this:

var lovelyDate = new Date(2006, 3, 30);

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?

Shouldn't they both return 30?

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Oct 31, 2006

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Jun 26, 2007

In the method nextImage, I can't figure out how to access thumbs. It keeps coming back as undefined. (Using Firefox)

function runPortal(portal_number){
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}
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// here is where I started guessing
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}

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Jul 23, 2005

I am trying to a onMouseover to the change the background of <td>s when
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Jul 23, 2005

I recently found out that the below code works in FireFox 1.0.4.

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I knew how to manipulate document object. Now, I see that there is this
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What other objects are accessible in FireFox?

I went to www.w3.org and searched for DOMParser and did not find
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Where can I find about DOMParser and objects available in the browser.

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I have two questions:

1. Is there anything in the specs/standards that says the <form> and <input>
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2. If nothing is in the specs/standards, then does anyone know of any
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Jun 30, 2006

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