Javascript Destroy Object
Jul 23, 2005Does Javascript supply a function that destroys an object? If so, is there a
dependancy on Javascript version?
Does Javascript supply a function that destroys an object? If so, is there a
dependancy on Javascript version?
i have an autocomplete function inside $(function()) and it is working fine.but i need to show some other results on autocomplete for the onchange(dropdown box) event when ever i tried this i am getting 2 auto suggested boxes 1)inside $function 2)onchange event...so, i need to destroy the autocomplete function inside the $function after onchange event.
View 1 Replies View RelatedHave a problem with correctly unload (destroy) FCKeditor object fromDOM, created through $.fck() plugin?I wana edit HTML content on fly. Double click to content block iscalled FCKeditor through you plugin. Button "Save" is post data toaction.php script. I want use Ajax for avoid reload page. Can I makebutton "Cancel" that make unload FCKeditor from DOM on fly.I tryed use $.remove() method, but any next call .fck() is failed.
View 1 Replies View Relatedi am calling a page which in the folder name pagestobeload and the page nameisprivacyInternal.htmlbut i am not able to destroy the dialog box it remains open
this is a html page where i am calling thisprivacyInternal.html
var privacyurl='../pagestobeload/privacyInternal.html';
$(document).ready(function(){
[code]....
I want to destroy the session when user click on Back button or browser... is it part of Javascript or Php..?
i think its just a small Query..!
The IE developer toolbar's DOM inspector shows the OBJECT tag and the PARAM
tags inside it, and if I don't have the Javascript in an external file, I'll
get the "click here to activate" tooltip and the border around what is
supposed to be the Flash movie. If I right-click inside the border, I get the
Flash context menu. The movie just doesn't load.
<html><head><title>foo</title>
<script>
function foo() {
AXObject = document.createElement("object");
AXObject.type="application/x-shockwave-flash";
AXObject.data="flashtest.swf";
AXObject.width="200";
AXObject.height="50";
AXObject.style.visibility="visible";
var p=document.createElement("param");
p.name="movie";
p.value="flashtest.swf";
AXObject.appendChild(p);
var p=document.createElement("param");
p.name="quality";
p.value="high";
AXObject.appendChild(p);
document.body.appendChild(AXObject);
}
</script>
</head>
<body id="foo" onload="foo()">
</body>
</html>
Is it possible to have something like the following so that 'three'
can access 'one':
var x = {
one: 1,
two: { three:this.one } // Or parent.one ?
}
If not (which I have nearly come to a conclusion on) what is the next
best way to accomplish this?
I want a page should not maintain history.what code in javascript.
View 1 Replies View RelatedI want to access the features of a plugin without actually embedding
it into a page. Is this possible? Eg
The code to embed the object into a page is:
<OBJECT classid='CLSID:7FA62735-AHC3-14d2-9F81-00114B3245C5
codebase='http://www.test.com/plug.cab#version=3,1' "id='myPlugin'
height=Ɔ' width=Ɔ'>
<EMBED type='application/x-myPlugin' name='myPlugin' hidden='true'
src='in.txt'></EMBED>
</OBJECT>
I could simply add this using document.write, but for various reasons
I dont want to do this.
I would rather do something like:
var plugin = (navigator.mimeTypes &&
navigator.mimeTypes["application/x-Web-Plugin"]) ?
navigator.mimeTypes["application/x-Web-Plugin"].enabledPlugin : 0;
myObj = new object("CLSID:7FA62735-AHC3-14d2-9F81-00114B3245C5");
myObj.pluginMethod
I have situation that when my page is loaded i create js object
<html>
...
<script>
function Page() {
this.page = 0;
this.result = 0
this.resultCount =1;
this.currentPage =1;
}
MyPage= Page()
</script>
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?
I have the following Javascript code
function Obj()
{
obj.squares = new Array();
}
Obj.prototype.Load= function(xdoc)
{
var goat = "head";
xdoc.ProcessNodes("squares/square", function(node)
{
alert(goat); // <-- this works fine
this.squares.push(
// do processing on node, create a square
);
});
}
Now the xdoc is another object I have, with a method called
ProcessNodes. The only important thing to know about ProcessNodes is
that it does some things, and calls its second argument (which is a
function) successively.
The problem I am running into here is once I get into the callback
function, "this.squares" is returning null ... even though it has been
initialized to an Array. For whatever reason, its like the object loses
scope when I get into the callback function. For all other intents and
purposes however, the callback function has the same scope as the
calling block (i.e. the goat variable is still accessible).
I'm trying to utilized a more object-oriented approach to managing
window events in javascript. Thus, I am creating a "controller" object
to handle events and interact with the server. However, I apparently
don't fully understand what "this" refers to. In the code below I was
expecting that when the button was clicked (handleDeleteButtonClicked
function) that "this" would be pointing at a ViewController object.
Instead it was the Button (HtmlInputElement).
<html>
<head>
<script>
/* Constructor */
function ViewController() {
this.foo = "bar";
}
/* delete button handler */
ViewController.prototype.handleDeleteButtonClicked = function() {
window.alert("delete clicked, this=" + this + " this.foo= " +
this.foo);
};
/* initializer */
ViewController.prototype.initialize = function() {
document.getElementById("delete-button").onclick =
this.handleDeleteButtonClicked;
};
</script>
</head>
<body onload="javascript:new ViewController().initialize();">
<input id="delete-button" type="button" value="Delete">
</body>
</html>
I 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 websites or good books to learn real heavy object oriented javascript?
View 1 Replies View RelatedI am creating a JavaScript object which I want to use to respond to user input on a web page. The object will basically be made up of a constructor and then a selection of functions which will use the DOM to alter the appearance of the page according to the user's input. I am getting stuck because I want a form element that is being created by the object to have an 'onkeyup' event attached to it which will call another function from the same object.
Now, I understand how to attach the 'onkeyup' event to the input element I have created using the DOM. If I tell the event to call a normal function (alert() etc) then it does exactly that. What I am having trouble with is getting the event to call another function from the object that created the input box in the first place. (I don't even know if this is possible / a wise thing to do!). Code:
I have a fairly complex javascript object - containing strings and arrays - which I need to pass along to a second PHP page. Is there a way to pass this object along via POST to be picked apart by the receiving PHP script?
I could dynamically create a form, populate it with the contents of the object, then pass it along via submit(), but frankly that's an awful pain.
I'm having trouble getting the following code to work properly. Every time I try to access the private testing variable from the priveleged MyMethod it gives an error. Says it can't find testing and that it has no properties so I can't run a push() command on it.
function MyClass()
{
var testing = new Array();
// define the method
function MyMethod()
{
this.testing.push("hello");
}
// make the method priveledged
this.MyMethod = MyMethod;
}
// a test function it ensure the variables declared here are isolated
function Start()
{
var myClass = new MyClass();
myClass.MyMethod();
document.write("[" + myClass.testing + "]");
}
Start();
Can someone tell me all the OOP's that can be made from javascript.
View 3 Replies View RelatedI have a page (page 1), my page 1 has an IFRAME which loads another page (page 2).
My page 2 has a JavaScript object declared on the page: var MyObject = new Object();
I want to access this object from the parent page (page 1).
I tried:
var TempObj = document.getElementById("MyIFrame");
TempObj.document.MyObject.value = "blah blah";
But it said MyObject didn't exist.
Can someone tell me how to access it in this manner?
I got two ASP pages. One is ASP email form (I'm using Persist ASP
Email component). Another one has all file links in it. For example,
when user click Outlook course hyperlink. It will pop up another
window with outlook course PDF file. (All PDF files are already in the
server).
What I am trying to do is: When user click the "Add Email" hyperlink,
it will add that course name and filepath into ASP/VBScript Dictioanry
Object. After the user finish and click "Attach to email" button. All
the files will be attached in the email as an attachment.
Because I am not familar with VBScript. So, can Javascript add items
to ASP Dictionary Object?
Is this possible? Basically I need to grab all the flash objects on the page (done) and then set the wmode to transparent so it doesn't mess up my DHTML menu.
View 2 Replies View RelatedI mean, I've a COM object, as Word.Application. How to implement in a
javascript function for using their methods?
I'm displaying a loggin page.
If the user entered an invalid UserName/Password I display the page again.
When this happens I want to give the user a different message then the one displayed when the page was initially displayed.
I use the Response.Redirect method from the page checking the submition.
When I do that I call the page with a parameter like this Response.Redirect("Page.asp?FROM=1").
When I get the parameter in the page I know I need to show a different message.
The problem is that if the page is called without the parameter, I
cannot determine that the parameter is missing.
The codse is very simple:
from_flag = Request.QueryString("FROM")
Now is the problem -
if I use if(from_flag == 'undefined') - this condition return
false.
but if I display from_flag using Response.Write(from_flag) I get "undefined"
if I use if(typeof from_flag == "undefined") - this does not work since the typeof return "object" in both cases when I call the page with the parameter or without the parameter.
also I tried to comnpare with null does not work.
By the way if I use VBScript as the script lang - it works fine I just need to compare the from_flag with vbNullString and all is well....
I stumbled upon a strange behaviour of the XMLHttpRequest.. Maybe I'm
just not well informed enough about its possibilities, so could someone
please confirm my question?
When I put plain javscript in a file that is read-in through a
XMLHttpRequest-object, it's like it is totally ignored. Eg. I have the
file ajax_include.html with in it's body the following lines
<script type="text/javascript" language="javascript">
alert('some alert');
</script>
when I directly surf to the file, the alert pops up as expected, but
when I use a simple XMLHttpRequest to replace the contents of a div
with the contents of this page, the alert is not popping up, although
when I view the selection's source (Thank you, Firefox!), it is there!
When I place an anchor with an onclick-action (eg. alert('onclick')),
it works when I click it.
So my "conclusion" is that it seems like inline javascript commands are
ignored (functions not recognized etc.). All actions assigned to other
events work nice though.
Can someone confirm this strange behaviour? Or is it just normal with
the use of an XMLHttpRequest opbject?
How can I, for example, retrive data from Profile object (or what so
ever) to some variable declared in javascript tag on client side?
For example, let's say I have this code in Some_Page.aspx:
....
Profile.Name = "Some Name";
....
And I have some variable in java script tag:
var someVariable;
How can I get this "Some Name" from Profile.Name to someVariable?
Ive been banging my head on the wall for hours with this one, hopefully
someone will know what Im doing wrong here :
The Goal:
I have an xml file that is generated on the fly via JSP which I want to
load into a Microsoft.XMLHTTP ActiveX object and manipulate via
javascript on the client side. Data is retreived from the server at the
request of the javascript without having to reload the page.
The Problem:
For the JSP to dynamically output xml, the file must have the extension
JSP, which is set to the mime type of dynamo-internal/html on the
server side (as we are using ATG Dynamo). But the javascript on the
client side will not retrieve anything unless the file extension is
..xml (or the mime type is recognized as text/xml). So the only way I
can get it to work is to change the extension to .xml, which then of
course amkes it so that the server will not process any of the JSP
code.
Ive tried to override the mime type within the javascript, using the
setRequestHeader method after opening the file, but no luck. A call to
alert the value of req.responseXML.xml after the send() turns up empty.
Ive only gotten it to work if I use a static xml file in palce of the
jsp. Sample of the javascript code is below:
if (window.XMLHttpRequest) {
// branch for native XMLHttpRequest object - THIS WORKS
req = new XMLHttpRequest();
req.overrideMimeType("text/xml");
req.onreadystatechange = processReqChange;
req.open("GET", "models.jsp?cId=300006&mId=TAC24", true);
req.send(null);
alert(req.responseXML.xml); //this gives me the resulting xml file
} else if (window.ActiveXObject) {
// branch for IE/Windows ActiveX version - NOT WORKING
req = new ActiveXObject("Microsoft.XMLHTTP");
if (req) {
req.onreadystatechange = processReqChange;
req.open("GET", "models.jsp?cId=300006&mId=TAC24", true);
req.setRequestHeader("Content-Type","text/xml");
req.send();
alert(req.responseXML.xml); //this gives me nothing
}
}
In looking at the following example the Microsoft gives (bottom of
page):
http://support.microsoft.com/defaul...B;EN-US;Q290591
I just dont see what could be going wrong here.
I should note that I successfully got the script to work using the
XMLHttpRequest object and the overrideMimeType() method. This works
with FireFox and I think some Mozilla clients, but not with the all
important IE5, which instead uses the XMLHTTP ActiveX control.=