How to check selected value of a radio group using id - javascript

I've seen many examples in stackoverflow getting the group radio value using input name. Is there any way to find it using id ?

It's generally better to use the name as it enables you to know which radio button in a group is selected (all radio buttons in a group have the same name but only one has a given id).
But if you want to check whether a particular radio button whose id you have is checked, you can do this :
var yesorno = document.getElementById('someId').checked;
Demonstration
If you want to get the value of the radio button whose id you know, it's simply
var value = document.getElementById('someId').value;

Short answer, not really.
You got to have a name otherwise the radio buttons will not work together, meaning all of them could be checked. When you already have a name, get the value by:
$('[name="myGroup"]:radio:checked').val()

I found out myself. This code worked for me!.
alert($('input[id=groudid]:checked').val());

var name = $("#myId").attr("name")
$(":radio").filter(function(){return $(this).attr("name") == name}).filter(":checked").val()

Related

JQuery: Check if any radio button is checked using radio button class name

I realize similar question had earlier been answered on stack overflow a few times. I checked all the questions and none were similar to mine.
I have a html form that has some radio buttons. In my validation I want to check if atleast one of the radio buttons are checked.
My approach so far:
All radio buttons have same class
All radio buttons have same name
I need to
check if atleast one of the radio button is selecetd
read the value of selected button.
My Javascript so far
function supportFormValidation(){
var isChecked = $('.radioButton').attr('checked')?true:false;
alert(isChecked);
return false;}
This always returns false. But when I try to read vale by individual IDs of each radio button it returns true. Is there any way I can check if a radio button is checked by using the class name.
JSFiddle: http://jsfiddle.net/evj9nch3/
Just use :checked.
var isChecked = !!($('.radioButton:checked').length);
In order to access the checked property you need to use the prop function (after 1.6 anyways). Because the value is either true or false, it's considered a property of the element not an attribute.
Nits answer is a better way of doing it, but look below for the reason why your implementation isn't working.
Take a look at this post for more info
Here is a link to the fiddle
function supportFormValidation() {
var isChecked = $('.radioButton').prop('checked') ? true : false;
alert(isChecked);
return false;
};
supportFormValidation();
<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>
<input type='checkbox' class='radioButton' checked='true' />
You can use this. I checked this is working
$(".ClassName").prop("checked", true)

Assign value from one input to another input using jQuery...not working

I have a couple of radios (#LocalDelivery and #StandardShip) related to a couple text inputs (#LocalDate and #datepicker). Then, off in another section is another text input with class productAttributeValue.
If LocalDelivery is chosen/checked, I need its input, #LocalDate to get the value and name from the input with class productAttributeValue. Or, if #StandardShip is chosen/checked I need its input, #datepicker, to get the value and name from the input with class productAttributeValue.
I have tried various combinations of the following:
if (!$('#LocalDelivery').is(":checked")) {
$('#datepicker').val("");
$('#LocalDate').val($('.productAttributeConfigurableEntryText div.productAttributeValue input[type="text"]').val());
$('#LocalDate').attr('name',
$('.productAttributeConfigurableEntryText div.productAttributeValue input[type="text"]').attr('name'));
}
if (!$('#StandardShip').is(":checked")) {
$('#LocalDate').val("");
$('#datepicker').val($('.productAttributeConfigurableEntryText div.productAttributeValue input[type="text"]').val());
$('#datepicker').attr('name',
$('.productAttributeConfigurableEntryText div.productAttributeValue input[type="text"]').attr('name'));
}
Per my other thread, Issue with jQuery 'else', this method isn't working. According to the answers given there, this is the wrong method entirely but I'm not sure how else to go about this.
Here is a fiddle:
This is my glorious Fiddle
EDIT:
Per beautifulcoder's comment I have added a click function to both radios. While it would be preferable for the inputs to populate their value without clicking first, this is the first solution I've had that works. Created a fiddle here, hope it helps someone else:
My amazing working Fiddle

JS and jQuery - loop through textboxes and store value

Here's the function that checks if the form is complete.
So, what I'm trying to do:
If radio is not selected, throw a message.
If radio is "yes", but text is not entered, throw error.
If radio is "no" but text is entered, make the text empty.
If all is good, add stuff into `allResponses
The form was displayed 5 times, and input was as follows:
Yes a1
No
Yes a3
No
Yes
Now, this input should display an error since in 5th case, "yes" is selected but nothing is entered in the textbox.
However, I get this:
http://i.imgur.com/ya2CUp0.png
Also, the text is not being updated as in 1st and 3rd cases.
I don't know a lot about JS, so please provide me with as explained responses as you can.
EDIT: Complete code: http://pastebin.com/scNSNM2H
Thanks
You have this in a loop:
var exaggerationPart = document.getElementById('exaggeration').value
And then you check to make sure it has a value for each item. But you will get the same value each time.
You are creating multiple inputs with the same id, "exaggeration". This is invalid HTML. Id's must be unique. To correct this, you can increment the id the same as you are doing with other elements (such as, input[name='response"+thisJokeIndex+"']).
var exaggerationPart = document.getElementById('exaggeration' + thisJokeIndex).value
tipTD2.append("<input type='text' name='exaggeration' id='exaggeration" + tipIndex + "' size='70'>")
Working demo: jsfiddle.net/svvge/2
Edit: To clear the value of the text box, you must change the value property of the text box element. Right now you are just changing the value of a variable.
var exaggerationInput = document.getElementById('exaggeration' + thisJokeIndex).value;
var exaggerationPart = exaggerationInput.value;
exaggerationInput.value = '';

multiple set of check box?

im having a set of multiple check bxes, like one set contain 3 check box share same name another set contain 3 check sharing same name . how can i get the value of these two different set of check box using a single code .
var form = $('usersurvey');
checkboxes = form.getInputs('checkbox');
for(count=0; count< checkboxes.length; count++){
if(checkboxes[count].checked){
retValue=true;
break;
}
}
return retValue;
}
im tried with this code but it fetch all the check boxes , i want only that have the same name, i used prototype.js
if you give each set of checkboxes a different class you could select them using jquery like:
$(".className").each(function(index, element) { ... });
for instance. somebody may be able to improve on this solution by selecting by name (i wasnt sure if you could do that, i always just select by class).
EDIT: sorry i should elaborate probably. the $(".className") piece will select all the checkboxes of class 'className'. since it sounds like you want to DO something with each of them though, i just added the each call on the end. inside the each call, you can define a function (shown) that will do something for each checkbox that was selected. reference the jquery each docs here:
http://api.jquery.com/each/

How to check with Javascript if all 'SELECT' values equal 1 inside a form?

Is it possible to check if all select values inside a div, inside a form equals 1?
I don't want to write hundreds of if statements.
Reason for this is that I am trying to validate the form, and want to check so that the user has selected something. Standard value in EVERY select list is 1 (not selected anything).
<form name="myform" onchange="return jsfunction();" etc...>
<div id="formdiv">
many many selects, all having a selected option value of 1
</div>
</form>
Not writing the code
Get all select elments using
document.getElementsByTagName ( 'select' );
which returns an array.
Loop through the array and get the selected value and check those.
To get the selected value you can use
document.getElementById ( elementinArrayIndex.id ).value;
where elementinArrayIndex is the select element in the current loop iteration.
If all the select elements that you want to check are inside the div element with id "formdiv" then you can use
document.getElementById ( "formdiv" ).getElementsByTagName ( "select" );
If you want to know if all of the boxes are checked, get them all with a
var selects = document.getElementsByTagName('select');
then loop through and count them
var checked = 0;
for(var i in selects)
{
checked += selects[i].value;
}
if checked is equal to the number of select boxes, they're all checked.
if(checked == selects.length)
{
//yay
}
beware of course that if there are lots of select boxes, this may take a while, but there isn't a great deal you can do about that. If you do run into a performance related problem, your selection system is possibly over complicated...

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