Trigger An Onchange Event On Page Load?
Jan 25, 2011
I have this onchange event that occurs after user selection of a dropdown menu. When a user makes a selection it queries the database and delivers some data.
The value of the dropdown is stored in a database, but the problem is when the page is refreshed the delivered data disapears, only reappearing if you change the dropdown.
How can I make the onchange event run when the page loads so that if there is already a selection, the database data will always be there, only to change if the user changes the selection?
Here is the JS:
<script type="text/javascript">
function showCustomer(str)
{var xmlhttp;
[Code].....
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Aug 1, 2009
I bind a custom event on page A,then ajax load page B。In page Bthereis a <a> link which trigger the custom event.Problem is :the trigger function work when i place the trigger
function in page A ,but not work in B by ajax load.
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Mar 9, 2009
IS there a way to trigger an onchange event from a DIV,eg, I have a DIV like this
Code:
<div id="resultb"></div>
so, when i change the content on this DIV using
[code]....
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Mar 28, 2009
Currently I am using an onchange event on a select menu and it is working fine. But if the user uses any arrow keys the event will not trigger. Is there any way to do that?
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Jan 21, 2009
I have made a drop-down list on my html form using <select> tag. I am using a onchange event for this select tag. My problem is that the onchange event triggers only when I use the mouse to change the value to drop-down list. When I use tab key to focus on the list and then change the value using up-down keys, the onchange event does not get triggered.
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Aug 22, 2006
Is there anyway to trigger an onChange event without actually clicking etc.
I want to trigger it from a method. It sounds silly but I'm taking some code over from another developer and if I could do this it would save me days of re-writing!!!
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Nov 29, 2011
I am having a play around with javascript and the html5 canvas to evaluate the feasibility of using it for a few personal projects.I have tried using both setInterval or setTimeout to set up a very rough framerate for an animation.The framerate is fine when coupled with a simple delta timing to smooth out the changes however when running under a large load (large images) I cannot seem to capture keyboard events very easily.
If I wiggle around the mouse a bit, it makes the keyboard more responsive but is there any way to get the window to poll the inputs rather than wait for an event to fire?This is much worse on Linux but the issue is still around on Windows.
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Jul 31, 2009
From within the ajax page I want to trigger an event outside the hosting div code...
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Nov 25, 2009
I want to reload an html page onChange event of dropdown list and retain the old values filled in the page.
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Jul 14, 2010
THIS WORKS:
<html><head><script type="text/javascript">
function recalc() {
alert ('Entering recalc().');
}
[Code]....
The first example works, which shows that the recalc function can be called. The second example works, which shows that onchange will trigger an alert box. BUT, the third example doesn't work. Why can't I trigger a call to the recalc function from the onchange event?
The above 3 code postings are the entire programs. Nothing has been left out or modified.
I am using IE 8.0.6001.18702.
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Jun 16, 2011
I put the following line in the onchange tag of a listbox to use the values to manipulate an iframe:
document.getElementById('viewer').src=('Location_Files/')+(this.value)+('.htm') There it works perfectly but I wanted to do more so I decided to build a function around it:
function display()
{
document.getElementById('viewer').src=('Location_Files/')+(this.value)+('.htm')
}
When I put the function in the onchange tag instead, the iframe tries to work but I get a "can't load page" message like the src is broken. Now when I first made that line it took me hours to figure out that I can't use a "" because if I do it fails. So I went with "/" and that works but I wonder if that rules change when I specify it in the java script instead of in the onchange tag itself. Either way it still breaks if I try to use "".
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Jan 21, 2010
I'm currently facing a weird issue with the onchange event. I have a web application where each blur event makes a call the webserver to store the value of the textfield. I only want to trigger that ajax call when something has changed, so i track the onchange event on each textfield to set a flag if something has changed.
The onchange event always fires to first time when i click outside of a textfield even if i didn't change anything in the field.
I narrowed it down to the following: A prefilled textfield always fires the onchange-event the first time you leave the textfield. An initially empty textfield does not fire the onchange event.
Sample code (IE 8 on Windows 7 computer):
script:
HTML:
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Feb 27, 2010
Is there a way to add event click on link created by dom after load page ?
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Nov 13, 2007
I understand that when loading a page, the html parser is suspended until any script that it comes across is executed. i also believe that certain browsers will allow user input for those parts rendered whilst the rest of the page is still being parsed. suppose that a user clicks a button that is visible and 'active' and fires off some lengthy javascript execution causing the ui to 'freeze' for a while. my question is, on a page that is still being parsed but allows user input on those parts parsed and rendered, will the parsing of the rest of the page cease whilst the event handler (onclick) is working or will the user see the page render simultaneously as the event handler does its job?
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Oct 10, 2011
I have a simple button in my HTML. I also have a function in my external JavaScript file. This function calls an alert box with some text. Now, I also have a global variable in my JavaScript that gets the button by id, then assigns the onclick event handler to it which in turn is assigned the call to my alert box function. Simple right?
Problem: The alert box shows up when the page loads as well as when the button is clicked. This is not desirable. code...
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Dec 31, 2011
I'm using the following code to attach a method to the click event of my button. It definitely works, but unfortunately the click event happens on page load even though no one has actually clicked on the button. How do I prevent this? $('#btn').bind('click',etCategories());
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Jul 7, 2010
I have a site which displays a selection of advert listings. We log the number of clicks each advert receives via ajax requests.The listings link to both internal pages on our site and external pages, hence the ajax - we cannot log the'clicks' by logging the requests on the destination pages as these are not all on our site for us to log. Also, I don't want to potentially get false positives e.g.from bookmarked pages - hence I am logging the actual clicks, not the requests on the destination.
All is OK in most browsers, but there is a problem with Safari (I am running Safari 4.0 on Windows XP running in Virtualbox OSE) but only where the destination is to open in the same window/tab (some listings go to a new window, some don't). I am logging clicks via an ajax request in the onclick event, which is working fine when the listing is to open in a new window, but it appears that when a new window is not to be opened, the ajax never gets sent.A have constructed the following minimal test case:
index.html
Code:
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" [code].....
Note the line commented '****' in index.html which cancels the action of the link. When this is not commented out, the ajax request is sent correctly. Without it (the desired situation) the ajax request never gets sent. Its as if Safari saves up the ajax requests to do later, but never sends them as the new page cancels all such 'saved up' actions.I am using the Safari web developer tools, but I have also checked this test case by checking the Apache logs. Note that as a test case I don't pretend that it will work in IE, but it should work in standards compliant browsers and has been tested on Firefox 3.6.6 and Opera 10.6. The Apache logs show that logger.txt is being requested, unless it is already in the browser cache.Possible workarounds I've considered, but would prefer to avoid:
On the site in question the only such links that currently open in the same window are internal, so I do have the option of logging safari clicks by logging these requests as opposed to clicks and checking the http referer on the server side. As this is not a very flexible solution as it relies on these specific circumstances, also relies on all other links successfully making a new window, and furthermore relying on http referer could result in false negatives I'd rather find a solution within the javascript.I haven't checked whether an asynchonous request would work, but I don't wish to do this anyway just in case there is ever a server problem that prevents the response coming back (note that for these purposes the response is actually superfluous - we are sending the server a message but don't need anything back). I also want to avoid the delay in sending the user to the destination - there is no point having to wait for a response we don't need.Lastly, and my prefered workaround unless I can find anything better, is to make Safari (only) open all links in a new window anyway.
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May 26, 2009
I use fckeditor at my form for a text area. I want to change te value for this text area with the onchange "trigger" of a select box.How I can do that? I used things like that but does not work
Code:
$('text_area').value= transport.responseText;
oFCKeditor.Value=transport.responseText;
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Jun 28, 2010
I have been having trouble getting the load event to trigger. My code was working ok then it stopped working. I removed everything, then I just got down to the most simple example and it still doesnt work. Example code is posted here, I can't get the load event to trigger. I think this code should absolutly work, but i cant get it to work. Can't figure out what I am doing wrong.
[Code]...
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Mar 24, 2010
Have a select drop down with an ID country. This function works fine when the user selects the country from the drop down however I cant seem to get it to Trigger on load. I am using Jquery 1.32 if this is useful?
$("#country").bind("load change", function () {
var val = $(this).val();
switch(val){
case 'USA':
$(".stateinput").hide();
$(".territorydropdown").hide();
$(".statedropdown").show();
$(".stateinput input").attr({name: 'countystate_hidden', id: 'countystate_hidden'}); .....
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Jul 23, 2005
How does one trigger an event programmatically? I'm interested in how to do this in both the "Level 0" event model as well as in the DOM Level 2 event model.
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Nov 23, 2006
Is it possible to trigger the certain event from JS function? I have an image with on click event handler assigned. Now if like to trigger this event for this image from some other function.
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Mar 24, 2009
I have a disabled field which can be changed by using search help showing the select option. After the user selects his wish, the disabled field contains his selection. I need to trigger an event automatically right after the disabled field is changed. This function triggers the event I need:
BBPSCForm_Submit('SC_REFRESH')
the code at the disabled field looks like this:
<input type=text title="`#GL_ACC`" name="`T_SCREEN_ACCLIST-G_L_ACCT[j].name`" value="`T_SCREEN_ACCLIST-G_L_ACCT[j].value`" maxlength="64" size="11" disabled>
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Apr 26, 2007
I have the follow element on a site:
<input id="file" type="file">
and it will be hidden, so I want to have a clickable image that will trigger the click event so that a dialog is prompted. Can some one please help me figure out how to do this? Lol, this is as far as I've gotten..
<img src="open.png" alt="Open File" onclick="document.getElementById('file').?????;">
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Dec 8, 2010
Is there a way to trigger an event when an object (div or img) became visible in the user brower? (ie: the user needs to scroll down to see the div in his browser, then making it visible trigger an event that load the picture inside)
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Nov 18, 2010
I have started to work on an extension that triggers when the page has been loaded. The problem I have is that the event is triggered twice. Its almost as if two threads are created when the users navigates or browses web sites. Why does this happen and how could this be changed to only trigger once. I have attached the files. Here is the browser.xul file
[Code]...
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