I have a radio button selection that jquery is able to loop through them and read the values for each one just fine, but jquery can only detect when one of them has been selected. When selecting the other one, jquery just ignores it and tells me none have been selected.
jquery:
$('[name="banner_type"]').each(function() {
console.log($(this).val());
if($(this).is(':checked')) {
valid = $(this).val();
return valid;
} else if(!$(this).is(':checked')) {
valid = false;
}
});
html:
<input type="radio" id="upload" name="banner_type" value="upload" />
<input type="radio" id="html" name="banner_type" value="html" />
"upload" is being ignored by jquery, "html" is not
Im doing it this way:
valid=false;
$('[name="banner_type"]').each(function() {
if($(this).is(':checked'))
valid = $(this).val();
});
So each time You check for radio being checked, valid value is renewed.
here's fiddle for You. Function "check" checks validity, returning false if none is selected.
http://jsfiddle.net/CLaDG/
The else part is setting value for valid but not returning it. Also the value is always false for second radio button. Try this:
$('[name="banner_type"]').each(function() {
console.log($(this).val());
if($(this).is(':checked')) {
valid = $(this).val();
return valid;
} else if(!$(this).is(':checked')) {
valid = $(this).val();
return valid;
}
});
This can be written shorter and better but right now I am just fixing the issue I see.
not sure which version of jQuery you are on, but try using jQuery.prop as well as delegated event on the container might be cleaner, such as:
$('.your-radios-container').on('change','[name="banner_type"]',function(){
valid = $(this).prop('checked');
});
I have forked your fiddle to show you how it could work:
http://jsfiddle.net/AcMBR/2/
Related
onclick of one radio button i have to check one condition if true i have to check it or restore to same old status,
html
<input type="radio" name="test" id="radio0" onclick="myFunction()" checked />
<input type="radio" name="test" id="radio1" onclick="myFunction()" />
<input type="radio" name="test" id="radio2" onclick="myFunction()" />
JS
globalCondition = false;
function myFunction()
{
if(globalCondition)
{
//some codes and it will check clicked radio button anyway
}
else
{
return false; // i tried this but its not working
/*here i don't want to check clicked radio button, and previously
checked button should be checked*/
}
}
As I said in comment return in the function will not do anything as you're not returning the function value in the in-line code.
Although the other solutions offered are correct, to keep your code unobtrusive, you should not have inline JS at all (remove the onclick='s).
I realize the question was not tagged jQuery, but maybe it should have been: Instead on onclick you should use a jQuery event handler, selecting only the set of radio buttons.
JSFiddle: http://jsfiddle.net/TrueBlueAussie/KVwL3/1/
globalCondition = false;
$(function(){
$("[name=test]").click(function(e){
if(globalCondition)
{
//some codes and it will check clicked radio button anyway
}
else
{
return false;
// or
e.preventDefault();
/*here i don't want to check clicked radio button, and previously
checked button should be checked*/
}
});
});
Notes:
DOM ready event:
$(function(){ YOUR CODE HERE }); is a shortcut for $(document).ready(function(){ YOUR CODE HERE});
Selectors
If an attribute [] selector = value contains special characters it needs to be quoted:
e.g.
$('[name="IstDynamicModel[SD_WO_CREATE]"]')
There are any number of selectors that will choose just the three radio buttons. As this is a simple one-off connection, at startup, there is no real speed difference between any options, but you would normally try and make the selector specific in ways that might make use of various lookup tables available to the browser:
e.g.
$('input[type=radio][name="IstDynamicModel[SD_WO_CREATE]"]')
This will be slightly faster as it will reduce the slowest check (the name=) to only radio inputs.
try this:
globalCondition = false;
function myFunction(e)
{
if(globalCondition)
{
//some codes and it will check clicked radio button anyway
}
else
{
e.preventDefault();
return false; // i tried this but its not working
/*here i don't want to check clicked radio button, and previously
checked button should be checked*/
}
}
USe like this
<input type="radio" name="test" id="radio1" onclick="return myFunction()" />
javascript
globalCondition = false;
function myFunction(e)
{
if(globalCondition)
{
//some codes and it will check clicked radio button anyway
return true;
}
else
{
return false; // i tried this but its not working
/*here i don't want to check clicked radio button, and previously
checked button should be checked*/
}
}
I have group of checkboxes and that are compulsory to be applied but the situation is user can be able to check only one check box at a time. So, for this I have implemented something like this with the help of internet. No doubt it works fine when there are no checkbox checked by default. But suppose, one of the checkbox is checked true when page loads, then this does not works unitl I click on checkbox twice.
Here is what I am using::
So , Assuming I have set of 5 checkboxes, I set same class name for all the checkboxes and then
<input type="checkbox" class="myclass" onclick="Checkme(this.className);"/>
<input type="checkbox" class="myclass" onclick="Checkme(this.className);"/>
<input type="checkbox" class="myclass" onclick="Checkme(this.className);"/>
<input type="checkbox" class="myclass" onclick="Checkme(this.className);"/>
<input type="checkbox" class="myclass" onclick="Checkme(this.className);"/>
In View page I have declared::
function Checkme(class_Name) {
Check_OR_Uncheck(class_Name);
}
In Common js::
function Check_OR_Uncheck(class_Name) {
$("." + class_Name).click(function () {
if ($(this)[0].checked) {
$("." + class_Name).each(function () {
$(this)[0].checked = false;
});
$(this)[0].checked = true;
}
else {
$(this)[0].checked = false;
}
});
}
Please Help me to achieve this..
Keep your code in the document ready event. This will register the click event for "myclass".
$(".myclass").click(function () {
if ($(this)[0].checked) {
$(".myclass").each(function () {
$(this)[0].checked = false;
});
$(this)[0].checked = true;
} else {
$(this)[0].checked = false;
}
});
jsfiddle
You could use document ready handler and call method:
jsFiddle
$(function(){
$(':checkbox:checked').each(function(){
Checkme(this.className);
});
});
Try this
$(function(){
$('.myclass').click(function(){
var s=$(this).prop('checked');
if(s==true)
{
$('.myclass').prop('checked',false)
$(this).prop('checked',true)
}
});
});
Or
You simply can use
if(s==true)
{
$(this).siblings().prop('checked',false);
}
FIDDLE
Try this
$(function(){
$('input:checkbox').prop('checked', false)
$('input:checkbox').click(function(){
if($(this).is(':checked')){
$('input:checkbox').not(this).prop('checked', false);
}
});
})
Instead of implementing a group of check boxes that behave like a group of radio buttons, I suggest implementing a group of radio buttons that look like a group of check boxes:
input[type=radio] {content:url(mycheckbox.png)}
input[type=radio]:checked {content:url(mycheckbox-checked.png)}
This approach simplifies your implementation; you have two one-line CSS rules instead of a JS event handler function, event binding (on both document ready and the HTML element itself), not to mention a possible dependency on jQuery (if you choose to use it).
The catch to this approach is that it requires CSS3 support. For more info, check out this SO answer: https://stackoverflow.com/a/279510/2503516
I am trying to uncheck a radio button if it is checked, and likewise check a radio button if it is unchecked. However, it is always saying it is checked when it isn't.
Here is my code:
$('input[type=radio]').on('click', function() {
if ($(this).attr('checked') == 'checked') {
$(this).attr('checked', false);
} else {
$(this).attr('checked', true);
}
});
The above code always hits the first part of the if. I've also tried
$(this).is(':checked')
and
$(this).val()
and
$(this).attr('checked') == true
but nothing seems to be working.
How can I get this to work?
Here is the fiddle hope this myt help:
<input type="radio" name="" value="1000" align="middle" id="private_contest">1000 is the value<br>
<input type="radio" name="" value="2000" align="middle" id="private_contest">2000 is the value
and relevant jquery is:
$('input[type=radio]').on('click', function () {
$(this).siblings().prop('checked', true);
$(this).prop('checked', false);
});
You need to remove the attribute checked to uncheck, and add the attribute to check the radio button. Do not assign value to it:
<input type="radio" name="radio1">
<input type="radio" name="radio1" checked>
use:
$(this).addAttr("checked")
$(this).removeAttr("checked")
This should never fail, but it's a different approach.
Target the parent, and return which radio IS checked, rather than looking at all of them.
Just an idea
var myRadio;
$('#radioParent input:radio').click(function() {
myRadio = $(this).attr('id');
//console.log(myRadio);
//return myRadio;
});
I am not sure why this received negative votes. The usage of a radio button is so that you can have 0 or 1 options to select from, and a checkbox list is if you need 0 or many options selected. But what if you want to undo a radio button selection for an optional question?
I solved this by creating another attribute on radio buttons called "data-checked".
Below was the implementation:
$('input[type=radio]').on('click', function() {
var radioButton = $(this);
var radioButtonIsChecked = radioButton.attr('data-checked') == 'true';
// set 'checked' to the opposite of what it is
setCheckedProperty(radioButton, !radioButtonIsChecked);
// you will have to define your own getSiblingsAnswers function
// as they relate to your application
// but it will be something similar to radioButton.siblings()
var siblingAnswers = getSiblingAnswers(radioButton);
uncheckSiblingAnswers(siblingAnswers);
});
function uncheckSiblingAnswers(siblingAnswers) {
siblingAnswers.each(function() {
setCheckedProperty($(this), false);
});
}
function setCheckedProperty(radioButton, checked) {
radioButton.prop('checked', checked);
radioButton.attr('data-checked', checked);
}
On the page load, set the data-checked property to true or false, depending on whether or not it is already checked.
$(document).ready(function() {
$('input[type=radio]').each(function () {
var radioButton = $(this);
var radioButtonIsChecked = radioButton.attr('checked') == 'checked';
setCheckedProperty(radioButton, radioButtonIsChecked);
});
});
I am trying to check if a radio box is checked using JavaScript, but I can't seem to figure it out properly.
This is the HTML code:
<input type="radio" name="status" id="employed_yes" value="yes">
<input type="radio" name="status" id="employed_no" value="no">
I have tried using jQuery as follows:
$(document).ready(function() {
if($('#employed_yes').is(':checked')) {
// do something
}
});
Also, I tried using pure Javascript by getting the element and check its 'checked' attribute, but it didn't work.
I look forward to your insight!
Thank you!
Use onchange
$('input[type="radio"]').on('change',function(){
if($('#employed_yes').is(':checked')) {
alert("yes");
}
});
DEMO
Try to check using name of the radio buttons like
if($('input[name="status"]').val() != "") {
// do something
} else {
alert("Select an Status");
}
Your solution doesn't work because when the page loads the checkbox's default state is unchecked, which is when the jQuery code runs.
You need to listen for the change event on the checkbox like so:
$(document).ready(function() {
$("#employed_yes").change(function() {
if(this.checked) {
document.write("checked");
}
});
});
Demo: http://jsfiddle.net/7CduY/
Try this. This will alert Hi on document ready if the any radio button is checked. If you want to check on specific event then you can bind on any event to check same.
$(document).ready(function() {
if($('input[type=radio]').is(':checked')) {
alert("Hi");
}
});
if($('input:radio:checked').text("yes") {
// do something
}
Got the idea from the jQuery forum. http://forum.jquery.com/topic/how-to-check-whether-all-radio-buttons-have-been-been-selected
Dude, I think you Wanted, whether radio button is checked or not, this what i understand from your question
If so here it is
$(document).ready(function() {
$('input[type="radio"]').on('change',function(){
if($('[name=status]:checked').length) {
alert("checked");
}
});
});
FIDDLE DEMO
Pure JS:
<input type = "button" value = "What?" name = "wic" onclick = "whatischecked(this.name);" />
Event onClick:
function whatischecked(name) {
var
emp = document.getElementById("employed_yes").checked
nonemp = document.getElementById("employed_no").checked
if (emp) {
alert("Employed");
};
if (nonemp) {
alert("Non-Employed");
};
if ((emp == false) & (nonemp == false))
{
alert("nothing checked")
};
}
I need to trigger some code when I click a checkbox based on if a checkbox is checked or not.
But for some reason, .is(':checked') is always triggered.
This is my code.
jQuery('#selectlist input[type=checkbox]').live('click',function(){
var select_id = jQuery(this).attr('id');
if(jQuery(this).is(':checked')) {
alert('You have unchecked the checkbox');
// Remove some data from variable
} else {
alert('You have checked the checkbox');
//Add data to variable
}
}
UPDATE
I've added an example on JSFiddle: http://jsfiddle.net/HgQUS/
Use change instead of click
$(this).val();
or
$(this).prop('checked'); # on jquery >= 1.6
You will be better at searching over SO:
Get checkbox value in jQuery
How to retrieve checkboxes values in jQuery
Testing if a checkbox is checked with jQuery
this.checked
Should tell you if the checkbox is checked or not although this is just javascript so you won't be able to call it on a 'jquery' element. For example -
<input type="checkbox" id="checky">
$("#checky")[0].checked
If the input has the checked attribute, then it is obviously checked, it is removed if it is not checked.
if ($(this).attr("checked")) {
// return true
}
else {
// return false
}
However, you can adapt the above code to check if the attribute, if it is not removed and instead set to true/false, to the following:
if ($(this).attr("checked") == "true") {
// return true
}
else {
// return false
}
Additionally, I see you use jQuery as an operator for selectors, you can just use the dollar, $, symbol as that is a shortcut.
I flipped-flopped the alerts, and it works for me:
<script type="text/javascript">
jQuery('#selectlist input[type=checkbox]').live('click',function(){
var select_id = jQuery(this).attr('id');
if(jQuery(this).is(':checked')) {
alert('You have checked the checkbox');
// Remove some data from variable
} else {
alert('You have unchecked the checkbox');
//Add data to variable
}
});
</script>
Your "if" syntax is not correct.
jQuery('#selectlist_categories input[type=checkbox]').live('click',function(){
var cat_id = jQuery(this).attr('id');
// if the checkbox is not checked then alert "You have unchecked the checkbox"
if(!jQuery(this).is(':checked')) {
alert('You have unchecked the checkbox');
} else {
//else alert "You have checked the checkbox"
alert('You have checked the checkbox');
}
});
if you're confused about why it says unchecked when you check it. There is nothing wrong with your code you can just switch the unchecked and checked with each other in the alerts like this:
$('#selectlist_categories input[type=checkbox]').on('change',function(){
var cat_id = $(this).attr('id');
let cat_idText = $("input[type=checkbox]:checked").val();
if(jQuery(this).is(':checked')) {
alert('You have checked the checkbox' + " " + `${cat_idText}`);
} else {
alert('You have unchecked the checkbox');
}
});
PS: I have updated the script to work in jQuery 3.5.1 the original with the live() only works on jQuery 1.7 since it was removed in 1.9 to instead use on() and on jQuery 3.5.1 you can use $ instead of jQuery and the val() function works on all versions because it added in jQuery 1.0
Or in a nice better fashion correct the if statement as RickyCheers said adding the ! before jQuery or $ which then the if statement will turn it into a if jQuery Element is not checked
$('#selectlist_categories input[type=checkbox]').on('click',function(){
var cat_id = $(this).attr('id');
if(!jQuery(this).is(':checked')) {
alert('You have unchecked the checkbox');
} else {
alert('You have checked the checkbox');
}
});