Delete A Object Inside A Constructor While Init?
Dec 3, 2005is there a delete for a object inside the constructor, while i init it?
i will try something like that:
var obj = function(a)
{
if (!a) delete this;
this.a = a;
}
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Copying All Prototype Functions AND The Constructor From One Object Into Another Object
Apr 5, 2011How would I go about copying all the prototype functions AND the constructor from one object into another object, and then call them?
I know I can use this.example.call(this), but that's not an acceptable solution. I want to deploy this style over dozens, potentially hundreds of objects.
Alternative To Object.constructor.name
Feb 9, 2010I need to detect the "name" of the constructor of an object. For example, myArray.constructor === Array is true, but I want something where that === 'Array' is true. I've heard of Object.constructor.name, but it's not widely compatible. (preferably without involving regular expressions)?
View 4 Replies View RelatedError: Object Is Not A Constructor?
Mar 20, 2010I am trying to understand why I had an error, or why my solution worked. In my HTML I had:
<script language="JavaScript" type="text/javascript" src="Book.js"></script>
<script language="JavaScript" type="text/javascript" src="Book_TEST.js"></script>
Book.js said:
[Code]....
Now, the code worked fine in both script. (i.e., no more error.) So far as I can tell, the only differences between the first and next version of Book.js are the comments and the whitespace. Am I missing something? Can the comments or whitespace somehow effect the logic with which this code has been executing? If I get an error like this again, is there an easier/better way to fix it than to essentially retype the code?
Extend The Constructor For The Date Object?
Jul 9, 2010How to extend the constructor for the date object of the javasccript so that whenever a call is made to the constructor, I want to perform a particular action? Basically how to define wrappers for default javascript methods or objects like Date() so that I can perform some action and then invoke the original method? So basically if I have something like var a = new Date(); I want it to (say) alert the value of the date everything Date() is called and then execute the default date constructor.
View 3 Replies View RelatedPrototype - Override Constructor For A Object?
Mar 23, 2011I have a requirement to override the constructor of a javascript class. I have to execute the current constructor code and then call a javascript method. Basically, I need to execute a javascript method whenever an object of that particular class is created in addition to whatever is being done now. I do not want to copy and paste the current constructor code and override the initcomponent method. I am looking for an alternative for that.
View 5 Replies View RelatedCreate A Constructor For A Computer Object?
Jan 1, 2011I need to create a constructor for a computer object. This object must have three properties: speed, and mem_live mem_dead. Then I need to create a new object using this constructor and then have its properties displayed on the screen.Look at what I'm up to so far:
function Computer(speed, mem_live, mem_dead)
{
this.speed = speed;
[code]....
It always just shows : 4.0ghz, true, false
Deleting An Object Constructor Does Nothing, But Returns True
Aug 8, 2005function show() {
var s = '' ;
for (var i = 0; i<arguments.length; s += '
'+arguments[i++]) ;
typeof(window) != 'undefined' ? window.alert(s) : WScript.Echo(s) ;
}
function f(){}
show('delete(f):',delete(f)) ; // false
g = function(){} ;
h = new g() ;
show('h:',h) ; // [object Object]
show('delete(g):',delete(g)) ; // true
show('h.constructor:',h.constructor) ; // function(){}
show('delete(h.constructor):',delete(h.constructor )) ; // true
show('h.constructor:',h.constructor) ; // function(){}
Using The Arguments Object When Instantiating Via Constructor Function
Jul 20, 2005Sorry, bad title. Anyway, is there a way to pass the arguments to an object
instantiated via a constructor using the arguments object and have it
expanded, so to speak, so that it doesn't appear as a single argument? I'm
sorry, this explanation is just atrocious, but I can't think of exactly how
to word it. Maybe an example...
Take for instance Function.apply. It takes 1-2 arguments, the first being
the object to use as the context, and the second being either an array or an
instance of the arguments object which are to be the arguments for the
function. I want to do something similar but I want to also basically use
the new operator so that I get back an object.
Here's a snippet of some of my code, maybe this will help:
Extending An Object Whose Constructor Takes Arguments?
Jan 2, 2011I'm sure this question has been asked many times before, but I can't seem to get the correct terms to find the answer in Google.I understand basic JavaScript inheritance. However, everything I've read makes the inheritance work something like this:
Code JavaScript:
var ChildClass = new Function();
ChildClass.prototype = new ParentClass();
ChildClass.constructor = ChildClass;
That's fine, but what happens when ParentClass's constructor needs parameters?As an example, look at the following code:
Code JavaScript:
function Furniture(color){
this.color = color;[code)....
How could I "copy" Furniture's constructor into the Chair object? Better yet, how could I copy Furniture's constructor and then add some functionality to it?
Can't Get Object Constructor To Pass Other Objects As Parameters
Jun 12, 2011I have a code set up something like this:
[Code]....
The problem is I keep getting an error along the lines of: TypeError: Result of expression 'house' [[object Object]] is not a constructor. It seemed to work when I wasn't passing the other objects as parameters in the constructor. I just created and assigned them later. As in:
[Code]...
Make A Degree Object That Inherits From The Number Object And Uses The Number Constructor
May 20, 2009I'd like to make a Degree object that inherits from the Number object and uses the Number constructor but adds a .rad() method that returns the value in radians.
If I do something like:
It generally works but I don't get Number's methods like toString and toPrecision.
Constructor Property Of Object - Inherited From Its Prototype - Changed Dynamically ?
Nov 19, 2009I had read from books that the constructor property of object is inherited from its prototype. And the prototype can be changed dynamically. New property can be added to or deleted from object even it was created before the prototype change.
But I got confused on below codes.
But the actual result (both IE and firefox) is
Remake Static Object Constructor With Length Property Which Would Be Not Enumerable In For Loop
Sep 20, 2010I have static object and I want remake it to a constructor with property 'length' which would be not enumerable in for loop... This is my object and how I generate it
[Code]...
How A Delete A Object From DOM ?
Aug 3, 2006I have a 4row x 1col table, I would like to drop all the content of row
three. Since Mac IE5.2 does not suppport deleteRow method, I have also try to set the innerHTML='' but it does not work. How can I delete the node from DOM in other way?
Select The Object Dragged And Be Able To Delete It?
Dec 29, 2010I have this code that I am using I want to be able to select the object dragged and be able to delete it.
<!doctype html>
<html>
<head>
<title>Testing</title>
<meta charset="utf-8">
[Code]...
Delete Single Element From Array/json Object?
Apr 1, 2010Is it possible to "properly" delete a single element from an array /object?This seems strange:
javascript Code:
Original
- javascript Code
alert(searchlist.length); // 4
[code]....
Do I have to overwrite the old object with a manually created new object?
Why Does Alerting A Record Create A Dialogue Box With Only [object Object] Inside It
Nov 4, 2009every 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?
Onload Init Twice?
Jun 16, 2006I have two vars: Code:
var filescroll = {
init: function() {
...
}
}
var processscroll = {
init: function() {
...
}
}
And I have this:
onload = filescroll.init;
I also want processscroll.init to run on onload. How can I do this? I assume I can just combine the two functions, but I don't know enough about JavaScript to know how to do that.
Get Variable Name Of An Object From Inside The Object
Apr 15, 2010Is there any way to get the variable name of an object from inside the object?
[Code]...
JQuery :: Validate The Cycle Init?
Mar 30, 2011does anyone know if we have someway to validate the cycle init? i mean ... can i have a callback function like onSuccess ? or maybe isReady where i can do more stuff after cycle is ready??
View 1 Replies View RelatedJquery :: Delete With Clickable And Click Delete Button?
May 20, 2011jquery and a button delete, for remove rows of database.The problem is that I do not know how must input checkbox by clickable with click delete button sent to php code?my jquery code:
PHP Code:
$("#tableeven tr")
.mouseover(function()
[code]....
JQuery :: Set Ui.size.width Of Resizable Img, After Init?
Apr 23, 2011My resizable works great. I want to be able to set the width and height after init. How do I set the width and height from a javascript function? I am using the onClick event of an IMG to call a javascript function.
I want to set the height and width of my resizable, so I want to set ui.size.width and ui.size.height.
How do I reference ui.size.width and ui.size.height of my resizable within a javascript function?
Call The Refresh Method In My Init Function
Aug 4, 2011I have this javascript code which I would like to call the refresh method in my init function but I can't seems to be able to call it. What is the proper way of doing this?
PHP Code:
TinyMCE Init Function Not Working On IE With Some Settings.. Why?
Dec 11, 2011I am using this settings to init my tinyMCE but unfortunelty its not working on IE..
HTML Code:
var config = {
settings : {[code]....
SCRIPT5: Access is denied.line 94 is the init function.. and when im using the init function without the settings then its working on explorer too :S
tinyMCE.init( );
what am i doing wrong?
Navigator Object : How Do I Get All The Inside Elements?
Jul 23, 2005I am trying to read all the navigator object elements
1. Using the navigator.length returns undefined, cant use for loop;
2.Using and array of known elements like
var a = Array("appCodeName","appName","appVersion");
I seem to miss something to get it combined like navigator.a[i]