JQuery :: Detect That Checkbox / Radio's State Has Changed / When .change Doesn't Work?
Jul 29, 2011
I've created a checkbox and radio button replacement plugin (URL...), and I'm trying to be as thorough as possible.One situation that I have yet to solve is if a button is given the attribute checked="checked" through some external function. I'm not sure of how to detect this event so that the replacement image is also updated. The .change() method only works when the user actually clicks on the button.The reason I am trying to work this out is because I am adding support for disabled buttons as well. From what I've seen, there are plenty of situations where a button is disabled until a user either selects something else, or fills in required info, etc., and then it is enabled (most likely through the removal of disabled= 'disabled '). If the developer has already worked that in, I don't want the implementation of my plugin to affect that. It should just work automatically.I do check the states on page load, but i'm not running any sort of loop to constantly look for changes.
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Jan 27, 2011
I am using jquery do detect realtime if a checkbox has changed. But i want to have a delay, otherwise when you type a long word the page changes every time you type another character.
Thi is the code:
$(function() {
var content = $('#plu').val();
$('#plu').keyup(function() { if ($('#plu').val() != content) {
content = $('#plu').val();
[Code]....
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Jun 27, 2011
Is there a generic way to fire an event when the state/value of a checkbox is changed by another event - i.e. not a user action. In this scenario, I have a set of checkboxes with a "select all" checkbox. I have the code written such that checking or unchecking the "select all" checkbox updates the state of all of the checkboxes below.
The extra requirement here is that some of these checkboxes have "children". So, when you check one of these, its children are automatically checked as well. So, what I need to do is check the main "select all" checkbox, which would then check all of the immediate children, which would then check all of their immediate children. I tried both an onchange and onclick event, but neither seem to be firing.
<html>
<head>
<script src="/scripts/jquery/jquery-1.3.2.min.js" type="text/javascript"></script>
<script>
[code]....
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Jan 17, 2006
'When my form is submitted, I have onsubmit pointed to the following
code snippet. But, the button is not actually set to disabled and the
style.visibility changes are not made for several seconds. It appears
that it goes into validateForm and doing the rest of this snippet
before the browser makes the changes.
How can I get the browser to immediately make the UI change?
function submitForm(servleturl) {
var submitbuttonelem = document.getElementById("submit");
submitbuttonelem.disabled = true;
document.getElementById("modgradeform").style.visibility="hidden";
var mydiv = document.getElementById("contentarea");
mydiv.innerHTML = "Validating the form.";
mydiv.style.visibility="visible";
var ret = validateForm();
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Mar 31, 2010
I've created a registration form with sponsorship options hooked to checkboxes. My original form used ASP to keep values in hidden fields to use for totaling everything at checkout time.
Now I'd like to use PHP and Ajax to place the value into the text field related for each option checked.
I'm able to do that making an Ajax call. My problem that I need help with is this: If the visitor decides to uncheck a sponsorship option, the value placed in the associated field remains on the form. How do I replace that value with a null or empty string if they decide to uncheck their original choice?
I've tried JavaScript to no avail so far, both in the client side and server side code. I'm very new at this and I need help. Will jQuery work without having to change a bunch of code?
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Feb 10, 2006
I'm trying to write some javascript code that should only run in firefox. I thought that document.all was undefined in firefox, but it actually is defined.
When I write it out I get
document.all = [object HTML document.all class]
How can I detect firefox?
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Jul 23, 2009
I'm having a problem with my radio buttons. On FF and Chrome they work just fine, but in IE, they does'nt appear as sellected. In other words: they do their job, but when you click'em, they stay unckeched. The genetarion code:
var item = $('<input type="radio" />').attr('value',pid).attr('name',name);
self.append($('<p />').append(item).append('<label>'+desc+'</label>'));
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Mar 17, 2011
Here is a script and its uses a latest jquery
$(function(){
$(".submit").click(function(){
varname=$("#name").val();
varsurname=$("#surname").val();
[Code].....
Its sends only a M value ..The different IDs gives a undefined there is a problem with radio button DOM - Jquery
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Jan 27, 2009
If I type characters using a Chinese text input (one where I type 2-3 latin characters for each Chinese symbol) there is no onkeypress or onkeydown event triggered. Any idea how to detect those characters please? I need to catch those chars in JS to pass them to a plug-in.
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Apr 2, 2010
I have a set of checkboxes that trigger events on a page. Clicking a checkbox triggers the event correctly and the checked attribute changes in the page source, but in the rendered browser view the checkbox status remains changed. If I load the page with the checkboxes checked, they always remain checked in the browser view. If I load the page with checkboxes unchecked, they always remain unchecked in the browser view.
If I remove the jquery code the checkboxes work as expected, but obviously don't trigger any events. I've tested this in both Safari and Firefox with the same results.
[Code]...
On another note, I'm having problems with the back button when using the forum. If I am looking through a multi-page search and click on a topic and then click the back button, I go to the first page of the search instead of the last page I was looking at. Similarly, when I first previewed this post and clicked "back" I was returned to the topic list instead of the compose-post page.
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Sep 25, 2009
I'm trying to do this:
$(document).resize(function(){alert('yea')});
But doesn't work on firefox or chrome, only work fine on IE (WTF!) I'd tried $('body').resize... but happen the same. $(window).resize work fine but I need to detect when the body's height has been changed by ajax.
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Apr 29, 2010
I'm using the following code to add the zebra effect in a table and to change the row color on mouseover.
.mover
{
background-color:#0099CC; [code]....
However the mouse over change of class doesn't seem to work! But the alert at the mouseover works.
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Sep 11, 2011
I have a simple menu as you can see in which i want the link that gets pressed to change color to grey.(line26).But before that (line25) i use jquery to change all the links back to their original color.But that line of code destroys my hover effect on all my links for a reason.
<head>
<style>
.link {
color: #fff;
[Code].....
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Aug 8, 2009
How to I can detect if a div was changed after the page loaded?
E.g. by innerHTML function.
ps: onChange not is valid for tag div. Reference here on w3c.
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Feb 22, 2010
I'm dynamically generating radio buttons, but in Internet Explorer (tested in versions 7 & 6), you cannot change the radio buttons after they've been added. In Firefox (testing in 3.6) it's fine. I've mocked up some code below which shows the issue. It generated up to 10 radio buttons (by random number) and checks that radio button programmatically. However you cannot manually select an already generated radio button.
HTML:
<form action="list.htm">
<div id="list"></div>
<button id="btnChoose">Add radio button</button>
[Code].....
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Sep 1, 2010
I am trying to validate a form with a couple of elements being required if a checkbox is NOT checked. Now if I submit the form the rules fire - and then I check the checkbox on - the validation rules have already fired - and even though the checkbox is now checked - the validation rules still apply and the form will not submit until I enter the fields.What I was hoping was that the checkbox could toggle the rules on or off.
var validator = $(".cmxform").validate({
rules: {
txtAddress1: {
[code]....
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Jul 10, 2010
When an ahref is clicked on a certain function is called. This function is called select_cresc(). The function works only on the else branch.When the Pret crescator a href is white it should be made grey when clicked on, but it does not work. How can this function only work on the else branch and not on the if branch, I just cannot figure it out.[code]So when i clicked the ahref once it sould be made white. When i click it again it should be made gray again. This last part does not work.
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Oct 5, 2005
depending on the partial content (domain) of the url, the links in the page must go to one domain/port or another. I've code that works well in IE but not in FF.
I think the problem is I'm putting the new url using
newurl="http://" + document.domain + page;
document.URL=newurl;
(page can be :7080/index.html or similar)
in FF the operation document.url = newurl; does nothing, the same in IE goes to the page.
Other idea for going to a page formatted in js? ?self.url? one variable that works in all browser?
or different variables for each browser and code to differentiate?
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Sep 8, 2010
This function is getting called as it should. the line "if ($("lumode").attr('checked'))" is not detecting the state of the checkbox properly. It always returns false so mode never gets set to 'all'. (#lumodestate is a button I am using to test the function).
$(function(){
$("#lumode").click(function(){
mode = '';
[code]....
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Nov 11, 2011
I have a little problem with saving a single checkbox state (check or uncheckd) for a session with jQuery.
I did find similar problems and solutions but i couldn't apply the help or solutions to my situation. So i give it a little try here..
Good to know is that I'm new to jQuery.
What i would like to achieve
I have one single checkbox that, when checked, will unhide some div's. When you uncheck the checkbox the div's will hide again. This is sort of an "Option". This works fine with the piece of jQuery code i have now.
The problem is that when a user checks the checkbox and then loads another page (/page2) the checkbox is unchecked again. I would like to store the checkbox state for a session. So users don't have to check the checkbox again, and again after browsing to the next page (if they wish to use this option).[code]...
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Feb 24, 2006
I need to detect if page loaded or not with a script (in a child
frame). The IE has a special readyState function, is there anything
similar for Mozila browsers?
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Apr 13, 2010
What you can see is that I have a bunch of images which form a chart, each of the images has multiple classes.I want to write a function which when called fades in/out images dependant on whether all related checkboxes are checked or not.Checkboxes are related to the images by id on the checkbox and class on the image, as I'm sure you can see. I will be calling this method each time a checkbox is checked.
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Aug 13, 2007
I'm trying to write function that will display some text and image by changing innerHTML of div element. The function is:
function showWaitImage(){
document.getElementById('image').innerHTML = "<span class='style'>Uploading photo, please wait...<img src='http://www.example.com/img/wait.gif' id='waitImage' width=ཛྷ' heght=ཛྷ' /></span>";
}
When I run this function, I see message and broken image in FireFox. I checked code and image URL like ten times, it should work, but it doesn't.
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Dec 11, 2011
I've noticed that the change event isn't fired on a text input when it's value is changed by JavaScript. It fires just fine when I type in the input and then lose focus. Example:
$(document).ready(function(){
$("#textinput").change(function(){
alert($(this).val());
[Code].....
I think have JavaScript which changes the value of the input dynamically.
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Apr 10, 2009
I would like to be able to automatically select a radio box if a drop down is clicked or changed, this works fine:
But I need to pass an array such as:
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Oct 13, 2011
I am trying to make a simple alert come up stating a checkbox is checked when it changes, and then another alert for when the checkbox is unchecked. Problem is, only the alert for when the box is checked is coming up.
function displayCheckPopUp()
{
if(document.activeElement.checked=true)
{
alert("A check box has been selected");
[Code]...
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