Passing Object Reference As A Parameter?
Apr 1, 2010
I have a function that changes the innerHTML of a DIV element. I want to pass to that function as a parameter a reference to the DIV to be changed. In the example below it works the first time (executed with the body onLoad event). As the subsequent function declaraton is rewritten by the function itself, it can no longer reference the targeted DIV. I tried to pass a string teference and use eval(), but this time it fails the third time it is executed.
Code:
<html>
<head>
<title>Passing Parameters to a Function (with object prameter)</title>
<script type="text/javascript">
[Code].....
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Dec 12, 2005
I have develop an ActiveX with Visual C++ 6
And I will call functions on this ActiveX from a javascript.
I know how to instantiate the activex object (with the balise <object>).
But how can I do to call a function of my ActiveX and pass to this function
some parameter by reference.
Here is what I have :
the function in the ActiveX :
void test(long *t, long FAR* nb)
{
t = 3 ;
}
And here is what I try to call this function in javascript:
var myT = 0;
my_control.test(myT); // here is the problem that
alert("T : " + myT);
But I receive the value 0
So how can I do to pass parameter by reference to a function of an ActiveX?
Is there anything to change in my function in the ActiveX?
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Jan 3, 2011
My question is commented in the script:
function Love(){
var req = {
ring : 'gold',
[Code]...
console.log(details.ring); // why does this return gold and not silver if req is passed by reference and we already changed its value above and so it's pointing to the same memory position?
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Jun 21, 2010
I know just enough javascript to be dangerous, I created a 5 star rater for pages, which is set up something like this:
Code:
var starRater=function(id){
// get latest rating info from server, write into "id" div, etc
}
//later in code...
var rating=new starRater("rating");
Over the course of development I added a comment section, page visit count and so forth, and ended up with redundant code and a lot of calls to the server. I thought instead I would make one initial call and then initialize the elements with the information returned.
To be able to call the initialize function on these elements, I need some reference to them. I could call them directly, as in the example above I could call rating.init(), but I'd have to know what variable name was given to it. Instead I was thinking I'd pass some sort of reference to the object, but that doesn't seem to be working.
[Code]...
In the code above I get undefined for raterElem.testVar. Obviously I'm missing something. What am I doing wrong?
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Jun 27, 2009
I had a script that was acting unexpectedly because of a function parameter. I was trying to pass a jquery object through a function to attach some events. I was wondering if someone could tell me why this
didn't fly:
[Code]...
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Jul 20, 2005
I am writing a validation function: what I want to do when an error is detected is to open a second window containing error messages. The form being validated is rather long, and there are several points in the code where I write the messages. So, I would like to have a separate function just to open the second window with an appropriate title (something like "the following errors were detected in your form"). something labout like this:
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Nov 23, 2005
Is there a way, I could pass the reference to a pop up window to
another function?
Basically, this is what I want to
var win= window.open("x.htm".....)
SetValue(win,"txtName");
//-------------------------------------------
function SetValue (win, ctlID)
{
var obj=win.getElementByID(ctlID);
ctlID.value="Hi";
}
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May 27, 2004
I have a bunch of forms in my page, and want to pass a reference to the current form to a javascript function - when, say, a user clicks on a particular element. Normally, within any type of input field, I'd just add something like this:
onclick="my_function(this.form)"
Then, in my_function( form ) I could refer to form. No worries.
But here's the interesting bit. I also want to run the same function when the user clicks on any <a> tag within a form, like:
<a href="javascript: my_function(this.form)"> ... </a>
Problem is, with this code, the form reference isn't passed to the javascript function. the "this.form" bit doesn't work...
I find this rather curious. So the question is, how do I pass a reference to the current form from within a non input field?
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Oct 9, 2005
I have a javascript function that is called in an OnClick event for a
button.
I am attempting to get the function to open a web page in a new window
in response to a button click.
I can get the page to open if I use the following syntax (hard code the
address)
var newwin =
indow.open("http://www.w3schools.com","","width=1200height=1000");
However, If I pass the url in as a parameter to the function (as below)
the value passed in is "Undefined" and obviously the page will not open
function openThePage(url)
{ url = "http://www." + url;
var newwin = window.open(url,"","width=1200height=1000");
}
<input
class="mybutton"
type="button"
name = "W3Schools"
value="w3schools.com"
onclick="openMyUrl(W3Schools.Value)">
Anyone any idea how I can do what I want - what I am doing wrong. I am
grey enough as it is and I don't want to start pulling my hair out.
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Apr 28, 2010
I am trying to pass the appropriate parameters but nothing seems to be working?
function calcSubTotal(unitPriceId, qtyId, subTotalFieldId) {
var unitPrice = parseFloat(document.getElementById(unitPriceId).value);
var qty = parseInt(document.getElementById(qtyId).value);
<tr>
<td><table><tbody>
[Code]....
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Jan 25, 2010
I am looking for a simple script that can read the parameter from the URL and pass it into a HTML textfield element.
www.example.com?email=test@test.com
On the page the email text field should be pre-populated on load.
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Aug 12, 2009
I have a Class name Merkzettel.
[Code]...
and addClickEvent sets the onclick attribute of above mentioned DIV. and in addClickEvent I am explicitely mentioning the name of class object. This means every time I create a Variable with another name I have to Change this function also.
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Aug 2, 2011
I'm working on a web page, it has a form and a
Code:
In the head i have the script
Code:
Now, i need to pass 3 parameters from the jsp to the script in such a way to pass them to my awedit servlet. Is it possible? How do i do it?
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Sep 15, 2009
I've been staring at this same problem for over a week now. I've worked around it as best as i can but i think it's time to ask someone else for input.
I'm trying to pass a value thru an ajax parameter.. that's all. it SHOULD be easy in theory.
What i want to do is create a jscript variable then pass that variable as the value for a parameter.
Php then converts that value to something it can use to finish the rest of my code.
As i said it's hindering my webpage progress and i would like to get it fixed soon.
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Mar 1, 2007
I am trying to pass an element's id to an ajax function so that I can update different areas by passing different ids to the same function, but I am not quite sure how to get it passed to where I want it to go.
Code:
function calGet(date,month,year,id,action) {
xmlHttp=GetXmlHttpObject();
if(xmlHttp==null) {//ajax won't work, redirect to a calendar php page to display the event with php
[code]....
In the function calGet I passed a parameter 'id'. I want to get this parameter down into the getElementById area in the stateChanged function and I've tried, many many ways, but I cannot figure it out.
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Apr 24, 2010
Here are the two functions:
Code:
Here is the code for the form where the tables are added:
Code:
This is what i want to do: When the user clicks "Add a New Page", it adds a table with the id="pageX" and a delete button with the id="deleteX" where X = the next page number.
When they click deleteX it should make pageX table display:none and assign a value to deleteX.
I got it to do everything except for assigning deleteX with a new value. the code that makes the delete buttons not work is:
Code:
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May 13, 2011
My WEB site opens an application window and then, from its original window it navigates to a status page.
Code:
var newWindow
function popUpApplication() {
newWindow = window.open(url, parameters...);
[Code]....
Now the problem with this solution is that if the window was closed by the user I will end up with a new pop up window, which I would like to avoid... Unless there is a way to check for window existence prior to attempting to create a new window.
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Oct 3, 2010
I am trying to pass a variable into document.getElementById and it is returning a null value. I am hoping someone can identify my error and point it out. The frustrating thing is, I got it to work and then changed the code and screwed it up again...ugh. Anyways, here is the HTML side of it (an onclick event in a button, calling a function with these arguments):
Code:
<input type="button"
id="AddHeader"
name="Add Header"
value="Add Header"
[Code]....
FireBug shows the problem is with the first line of the function - it's assigning myDiv null instead of what I want it to assign it (div#myDiv1 I think).
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Jan 20, 2010
I have a search box here: [URL] I am using the below Java Script and form code to pass the entered value to search.html:
<script type="text/javascript">
function searchVerify() {
if(document.search.qt.value=="Enter keywords...") document.search.qt.value="";return true;}
</script>
<form id="search" method="get" action="search.html" onsubmit="return searchVerify()">
<p><input type="hidden" name="col" value="eu" ID="Hidden1"/><input type="hidden" name="style" value="nonpbs" [Code]....
I want to know how I can pass the entered value into the google search in the iframe on search.html.
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Apr 28, 2011
i dont know how to do this?
<script language="javascript" type="text/javascript">
function ShowHideDiv()
{
var myDiv = document.getElementById("LoginDiv");
if(myDiv.style.display=="none" && '<%=_Type %>' =="Sign in")
[Code]...
just tell me how to pass parameter from this function ShowHideDiv() and how to use this?
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Feb 3, 2010
I have a loop that iterates over an array of objects.
Then for each of these objects, a div element containing an img element is created and appended to the document.
Further each img element must have an onclick event that basically changes the backgroundColor of it's enclosing div, as well as make changes to the associated object in the array.
The loops basically looks like this:
Code:
Now everything is created fine and the events are bound to the images, however, the only things that change in any of the onclick events are the very last container and object passed. For some reason it seems that the references in all the previous loops are replaced with the newer ones.
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Aug 27, 2009
Before any elaboration.. see the code first.
[Code]...
Here i don understant why but id="test" doesn't seem to be passed through getElementById(id)....do i need to use some escape character or something?
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Dec 30, 2009
i am getting a problem while passing parameter to another 'jsp' through hidden variables.I am getting null while requesting the parameter in 'mywindow.jsp'
my code goes like this
[Code]....
i am getting "null" as value of strFlag.I need to use enctype as "multipart/form-data" to submit form.
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Sep 3, 2010
If I have something like this:html4strict Code: I'd get an error. Is there anyway I can make this work so that if I pass a value through as a parameter, I can use it when referencing a particular field?
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Jul 20, 2005
I have a search page im asp.net. the user enter the criterias in
textboxes and dropdownlists and on submit i want the results to be
displayed in a popup window.
so the easy way is to pass the criterias in a querystring to the new
window. but if it's possible i don't want to use query string.
in asp, i could use the folowing:
i open a temporary blank window, on load I take the values of the search
page using the window.opener and submit them to the server.
Unfortunately this can't be done in asp.net coz window.opener isn't
working.
so is there a way to do that ? or the only way is to pass the parameters
in a querystring ?
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Jul 20, 2011
I know its a cliche but I am new to JQuery. I have seen many posts about passing function as parameter but none is what I am looking for. Not too sure if its possible but no harm asking.I have a function that trigger a modal
function InitNewModal(URI,Title,Width,Height,Params)
{
// Begin modal function
[code]....
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