JavaScript - Location Object Question

The following code snippet:
(this.inputArray is already defined and initialized prior to this code sequence)
if(this.inputArray.length >= 0)
{
this.inputArray[this.inputArray.length] = new Object();
this.inputArray[this.inputArray.length].type = 'pcDisp';
this.inputArray[this.inputArray.length].data = a;
}
the first line in the code block should create a new array item and initialize
it with the various assigments in the next lines.
But Firefox complains
"this.inputArray[this.inputArray.length] is not defined".
This is very disconcerting because the code has to create array items
with different data based on conditionals. So I must be able to automatically create new items as necessary. I thought that javascript had 'late binding', but maybe that doesn't apply here.

So, does anyone have a clue for me?

This is a constructor function.
PROC will be an instantiation of another constructor.
It will have a copy of GLBS.
function _CALC_ELEMENTS(ELEM, GLBS, PROC)
// PROC will also have a copy of GLBS.

So, techincally, how could I access the copy of GLBS in PROC, via
instance of _CALC_ELEMENTS. If I can do this, I do not need to
include it directly. (GLBS is yet another object instantiated via
constructor)

I am just concerned that there are two copies when only one is
necessary.

Thanks for thoughts on this
JK

Hello,

I'm trying to write my class with member properties and functions like below. What I want to learn is that is there any problem to use prototype object in the class that we want to use with it? I asked because I generally see that prototype object definition and member functions and properties created outside of the class unlike my class that I wrote like below.

Is there any problem writing my class like below?
Thanks.


Code:

        function Point()
	{
		Point.prototype.x = this._x;
		Point.prototype.y = this._y;
		
		function _setX(x)
		{
			this.x = x;
		}
		Point.prototype.setX = _setX;
		
		
		function _setY(y)
		{
			this.y = y;
		}
		Point.prototype.setY = _setY;
		
		
		function _show()
		{
			alert(this.x + this.y);
		}
		Point.prototype.Show = _show;
	}


	function callMyClass()
	{
		var p = new Point();
		p.setX(3);
		p.setY(5);
		p.Show();
	}

function get_price()
{
var the_price=1000;
if (this.speed=="500MGz")
the_price+=200;
else
the_price+=100;
if (this.hdspace=="15GB")
the_price+=50;
else
the_price+=25;
if (this.ram=="128MB")
the_price+=150;
else
the_price+=75;
return the_price;
}

function computer(speed,hdspace,ram)
{
this.speed=speed;
this.hdspace=hdspace;
this.ram=ram;
this.price=get_price;
}

var work_computer=new computer("2GHz","80GB","1GB");
var home_computer=new computer("1.5GHz","40GB","512MB");
var laptop_computer=new computer("1GHz","20GB","256MB");

var work_computer_price=work_computer.price();
var home_computer_price=home_computer.price();
var laptop_computer=laptop_computer.price();


___________________________________________________

In the above code, the line I'm having trouble with is marked red.

Why is it that when I call the method using ...

this.price = get_price;

It works fine.

But if I assign the object this.price with like this...

this.price = get_price();

I get an error?

Isn't get_price() a function? So shouldn't the parenthesis be included when the method is called? Why are we suppose to leave out the parenthesis?! I'm confused.

Thanks!

Hi,

I'm using the following Javascript code to show a div layer depending on the URL

Code:

<script type="text/javascript">

if (location.href.match(/folder/)) {

document.getElementById("div-layer").style.display="block";

}

</script>

This works perfectly when I visit http://www.domain.com/folder but I do not want it to match any subfolders beneath /folder, for example:

http://www.domain.com/folder/sub-folder
http://www.domain.com/folder/sub-folder2

etc.

Does anyone know how I can modify the code to only match /folder or /folder/ and no subfolders beneath it?

Thank you in advance.

What are the differences between results of these two.


Code:

window.location.hostname

or
Code:

document.location.hostname

Hi, every time I try and alert:

[ { number:0, secondnumber:0 }, { number:2, secondnumber:1 }, { number:1, secondnumber:2 } ]

it just shows [object object], [object object], [object object].

Why is this and what can I do to make the record be shown as it is above in an alert?

Thanks.

I created a method for displaying an object's properties:

Code:

renderfunction 	= false;

function showProperty (object, property)
{
	document.write  ('<td class="type">' + (typeof object[property])  + '</td>' 
					+ '<td class="name">' + property + '</td>');
	
	document.writeln('<td class="value">' + 
						(
								(typeof object[property] != 'function')
								? object[property]
								:(
										(property != 'showProperties')
										? (
											renderfunction
											? object[property]()
											: ('<span class="self">NOT RENDERED</span>')
											)
										: ('<span class="self">THIS</span>')
								 )
						) 
					+ '</td>');

	
	document.writeln('<td class="hasOwnProperty" >'  
							+ (
									object.hasOwnProperty(property)
									? "Local"
									: "Inherited"
								)
					 	+ '</td>');

	if (typeof object[property] == 'function')
	{
		document.writeln ('<td class="function">' + object[property] + '</td>');
	}
	else
	{
		document.writeln ('<td class="function"> </td>');
	}

}

As long as renderfunction = false, the object is fine coming out of this function.

However, if I change renderfunction to true, all my properties become undefined.

Why isn't this working as I expect it to?

How should I fix it?

Thanks in advance,

-Brian.

I can't get any info from Firebug except that one line, uncaught exception [object Object]. The code fully worked, then I needed to make it dynamically create Sortables from the scriptaculous library based on how many X were in a table in my database, which I've done, and I'm thinking it may be a simple slight parse error of some type, I'm not too good with Javascript, because now my script barely works. I've double checked the script's source code, the PHP variables are exactly what they should be.

Code:

print<<<HERE
               Sortable.create('sortlist$box', { tag: 'img', overlap:'horizontal',constraint:false, containment: $list, dropOnEmpty: true, 
                onChange: function(item) {
                    var list = Sortable.options(item).element;
                    
                    if(changeEffect) changeEffect.cancel();
                    changeEffect = new Effect.Highlight('changeNotification', {restoreColor:"transparent" });
                },
            
            
            
            onDrop: function(item) {
            var thing=Sortable.options(item).element.identify();
            
            var anchors = document.getElementById(thing).childNodes.length-2;
            
            if(anchors > 20){
            alert('This box had 20 creatures in it already, your last action has not been saved.');
            window.location.reload();
            }
            else{
            
            new Ajax.Request("saveImageOrder.php", {
                        method: "post",
                        parameters: { data: Sortable.serialize("sortlist$box") }
                    });
               }   
}               
            });
               
HERE;
$box++;

}
?>
          
        });
    </script>

if you solve this I'll send ya $10 via paypal

Hello together!

I generate html code with jsp. In that jsp there a several framesets and frames. And yes i know, frames are not really up to date but it's an old program and i have to deal with it now. Anyway, in the top frameset i have an onload attribute like onload="load()".

In the function load i want to access the Element.prototype object. But unfortunately typeof Element gives me "undefined". So i looked a little deeper and found that window.toString() gives me "[object]" and not as expected "[object window]" so somehow my window doesn't know that its construcor is Window. window.construcor is "undefined" as well. And i don't have access to the Element object. I really don't know where the error could be. When the page is loaded and i access the same window over the console, then everything is right. But in my function a can't get access to the objects i need.

I also don't know what part of the code could be useful to post here, but maybe someone had a similar problem before? i should say that this problem only occurs in IE8. In IE9 it works perfectly.

Has anyone any idea??

Hi all,

I'm stumped on finding a way in javascript to create an object factory whose instances are also object factories. In short I want something like that below, but no joy ... any clues?


Code:

function createClass () {
	return new createClass()
	function createClass() {
		return new createInstance ()
		function createInstance () {
			//Default properties, values and methods which might later be extended
		}
	}
}

var createDoor = createClass();
var door1 = createDoor();
var door2 = createDoor();

var createChair = createClass();
var chair1 = createChair ();
var chair2 = createChair ();

Ignore post (if mod, please delete)

I'm writing a program that involves a network of interconnected nodes (or simply objects in my example below). It depends on being able to access properties of an object's linked objects (a bit oddly worded, sorry)...

Problem is I'm not sure how to properly access those properties... see below please.

<script>

//This is an example of a problem im having in my own code...
//I want to access the name of the object within the links array wintin the object...

var objA = {name: "Object A", links: [objB, objC]};
var objB = {name: "Object B", links: [objC, objD, objE]};
var objC = {name: "Object C", links: [objB]};
var objD = {name: "Object D", links: [objE]};
var objE = {name: "Object E", links: [objD]};

//ex: I want to access the name of Object A's first link...
console.log(objA.links[0].name);

</script>

I'm hoping to get "Object B"...
But instead I get: TypeError: Result of expression 'objA.links[0]' [undefined] is not an object.
Is there another way around this? Any thoughts are appreciated.

Hello.

Is there any way to get the variable name of an object from inside the object?

E.g.

PHP Code:
function Bla(){

    this.write = function(){
    document.write(<objectname>);

    }

}

obj1 = new Bla();
obj1.write(); //Outputs obj1 



Here is my script:

PHP Code:
function myTimer(seconds, obj){
    this.seconds = seconds;
    this.obj = obj;
    this.startTimer = function(){
        if(this.seconds>0){
            this.seconds--;
            this.obj.innerHTML = this.seconds;
            this.timer = setTimeout("Timer.start()",1000);
        }
    }

}
Timer = new Timer(10, obj);
Timer.startTimer(); 



Now the problem is that the variable that contains the object must be named "Timer".

This way I cannot create new timer objects with different variable names

I have tried:
this.timer = setTimeout("this.start()",1000);
but it doesn't work.

That's why it would be good to detect the variable name and instead use something like this:
this.timer = setTimeout(varname+".start()",1000);

I would rather not have to pass the variable name through a parameter like this:
Timer1 = new Timer(10, obj, "Timer1");

Thanks in advance.

Quote:
menu: function( a, b ) {
$( b ).observe( 'click', function( event ) {
event.stop();
if( $( a ).visible() ) {
$( a ).hide();
$( b ).removeClassName( 'selected' );
document.stopObserving( 'click' );
} else {
$( a ).show();
$( b ).addClassName( 'selected' );
document.observe( 'click', function( e ) {
if( e.target.id != a && e.target.id != b && !Element.descendantOf( e.target, $( a ) ) ) {
$( a ).hide();
$( b ).removeClassName( 'selected' );
document.stopObserving( 'click' );
}
});
}
});

$$( '#' + b + ' > a' ).each( function( element ) {
element.observe( 'click', function( event ) {
$( a ).hide();
$( b ).removeClassName( 'selected' );
document.stopObserving( 'click' );
});
});
}
This work's perfrect accept when i use it with others on the menu it leaves the other ones open, how do i get it to close the open one when i open a new menu..

Thanks.