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How to assign the input from two radio buttons to a single field?

I am new in coding. I have two radio buttons. If a “yes” is selected in either from them a certain field (here kouAP) must be AUTOMATICALLY set to a value (in this case 0.56). The problems are:
how to make both radio buttons to set the value to a single field?
How to keep the wished value if one of the is “yes” and the other is “no”? No matter of the order of clicking.
My JQuery makes no sense :(
Thanks you
HTML
<label for="Pre002">ccs</lable>
<br />
<input type="radio" id="Pre002o" name="css" value="0">
<label for="Pre002o">none</label>
<input type="radio" id="Pre002d" name="css" value="4">
<label for="Pre002d">yes</label>
<br />
<label for="Pre066">mi</lable>
<br />
<input type="radio" id="Pre066a" name="mi" value="0">
<label for="Pre066a">yes</label>
<input type="radio" id="Pre066b" name="mi" value="1">
<label for="Pre066b">no</label>
<br />
<input id="kouAP" type=“text” name="kouAP" readonly="true" placeholder="kouAP">
<label for="kouAP">at least one yes</label>
JQuery
$('input[type=radio].css; input[type=radio].mi').click(function(e){
if ($(this).attr("id") == "Pre002d" || $(this).attr("id") == "Pre066a" ){
$("#kouAP").val(0.5677075);
}
else {
$("#kouAP").val(0);
}
});

There is nothing wrong with code.
Just provide the name of the element you listen the click from.
Replace:
$('input[type=radio].css; input[type=radio].mi').click(...);
With:
$('input').click(...);
or:
$('input[type=radio]').click(...);
to avoid future errors.
I just advice you to go through the basics again :)
EDIT
For the second question, I guess it's just a work around with if..else. Hope it helps.
$('input').click(function(e){
if ($('#Pre002d').is(':checked') || $('#Pre066a').is(':checked')){
$("#kouAP").val(0.5677075);
}
else{
$("#kouAP").val(0);
}
});

Make check-boxes becoming one group of radio button

I cannot make the input name same or value same. The second and third inputs come from a loop using c# razor. I have 2 sets of radio inputs first one is one set and second and third are another set. Because the second and third have the same name, checking one makes the other unchecked. I want the same for all of them together so it would be like I have one set of 3 radio buttons. Like I said above I am not able to make the name or value same due to back-end data display issue. Here is my attempt below.
//first radio <br/>
<div class="radio">
<label>
<input id="dcenter-allradio" type="radio" value="0" />All
</label>
</div>
//this radio button is a loop <br>
<input type="radio" name="#Model.Facet.Key" value="#item.Key">tagitem.j
<div class="radio">
<label>
<input id="dcenter-listradio" type="radio" name="#Model.Facet.Key" value="#item.Key" />tagItem.Name
</label>
</div>
<script>
$(document).ready(function () {
if ($('#dcenter-listradio').prop("checked", true)) {
$('#dcenter-allradio').prop("checked", false);
}
if ($('#dcenter-allradio').prop("checked", true)) {
$('#dcenter-listradio').prop("checked", false);
}
});
</script>

If you can give them all the same class, then you can just use jQuery to detect when a change has occurred and then uncheck other items in the same class.
$(document).ready(function() {
var selector = ".groupTogether";
// or if you can't give same class, you could use "#unrelatedRadio, input[name='related']"
$(selector).change(function()
{
if(this.checked)
{
$(selector).not(this).prop('checked', false);
}
});
});
<script src="https://ajax.googleapis.com/ajax/libs/jquery/1.9.1/jquery.min.js"></script>
<input id="unrelatedRadio" name="unrelated" type="radio" class="groupTogether">unrelated</input>
<input id="relatedA" name="related" type="radio" class="groupTogether">Related A</input>
<input id="relatedB" name="related" type="radio" class="groupTogether">Related B</input>
Or, if you can't give them the same class, just replace the selector with something that selects both sets (in my example, "#unrelatedRadio, input[name='related']")

let radios = document.querySelectorAll("input");
for (let i of radios){
i.name="same"
}
<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>
//first radio <br/>
<div class="radio">
<label>
<input id="dcenter-allradio" type="radio" value="0" />All
</label>
</div>
//this radio button is a loop <br>
<input type="radio" name="#Model.Facet.Key" value="#item.Key">tagitem.j
<div class="radio">
<label>
<input id="dcenter-listradio" type="radio" name="#Model.Facet.Key" value="#item.Key" />tagItem.Name
</label>
</div>

Make a checkbox unchecked when it is hidden using JavaScript

I have a JavaScript function in place for a multiple choice quiz:
If the answer is 'Yes' - (checked by a checkbox) - Then a sub-question will appear, but if the user clicks 'No' the sub-question won't appear.
JavaScript
$(document).ready(function() {
var par = $('#SQ1');
$(par).hide();
$('#Q1').click(function(e) {
$(par).slideToggle('slow');
});
});
$(document).ready(function(){
$('#Q1NO').click(function(){
$('#SQ1').hide('slow');
});
})
Questions checkboxes
<div>
<input type="checkbox" id="Q1" name="chk[]" value="Yes"> Yes</input>
<br>
<input type="checkbox" id="Q1NO" name="chk[]" value="No"> No</input>
</div>
Sub-Question checkboxes
<div id="SQ1">
<div>
<input type="checkbox" name="chk[]" value="Yes 2" id="Q1R"> Yes</input>
<br>
<input type="checkbox" name="chk[]" value="No 2"> No</input>
</div>
</div>
I am inputting the values from the checkboxes into a database and the problem is that if the user clicked 'Yes' and then selected a box from the sub-question, but then changed their mind and clicked 'No' on the primary question, the sub-question will disappear, but the box is still checked inside it and it gets added to the database - Which I don't want.
Is there a way to uncheck an item within a div, on the click of the 'No' from the first div?
Thanks for reading

Uncheck all subquestions checkboxes:
$('#Q1NO').click(function(){
$('#SQ1').hide('slow')
.find('input:checkbox').prop('checked',false);
});

First of all there either should be radio button for Yes/no or only one checkbox. There are several ways to achieve your requirement. I have posted below easiest one. See if it helps.
function showHideSub(isChecked){
if(isChecked)
{
$("#sub").show()
}
else
{
$("#sub").hide()
$("#sub input[type=checkbox]").removeAttr("checked");
}
}
<script src="https://ajax.googleapis.com/ajax/libs/jquery/1.11.1/jquery.min.js"></script>
<div>
<input type="checkbox" id="Q1" name="chk[]" onclick="showHideSub(this.checked)" value="Yes"> Yes / No </input>
<br>
</div>
<div id="sub" style="display:none">
<input type="checkbox" name="chk[]" value="Yes 2" id="Q1R"> Yes/No</input>
</div>

Solution without loop as you can set properties on all query matches.
$('#Q1NO').click(function() {
par.hide('slow');
par.find("input[type=checkbox]").prop('checked', false);
});

How to validate radio buttons?

I created the following form:
http://jsfiddle.net/baumdexterous/GYNSu/1/
I implemented a validation script that works for many of the form elements but for some reason it's not working for the radio buttons so currently a user can submit the form without selecting one of the required radio buttons.
How can I enable validation for the radio buttons using this existing script? Thanks so much.
<ul>
<li class="required">
<label>What is the U.S. Capital? Please select your answer below:</label>
<div class="questionsone">
<input name="questionone" type="radio" value="a">a) New York<br>
<input name="questionone" type="radio" value="b">b) Washington DC<br>
<input name="questionone" type="radio" value="c">c) Seattle<br>
<input name="questionone" type="radio" value="d">d) Portland<br>
</div>
</li>
</ul>
Update: I have this JavaScript part that works with the existing validation. Trying to figure out how to add a way that will detect radio buttons:
<script>
$(function() {
var root = $("#wizard").scrollable();
// some variables that we need
var api = root.scrollable(),
drawer = $("#drawer");
// validation logic is done inside the onBeforeSeek callback
api.onBeforeSeek(function(event, i) {
// we are going 1 step backwards so no need for validation
if (api.getIndex() < i) {
// 1. get current page
var page = root.find(".page").eq(api.getIndex()),
// 2. .. and all required fields inside the page
inputs = page.find(".required :input").removeClass("error"),
// 3. .. which are empty
empty = inputs.filter(function() {
return $(this).val().replace(/\s*/g, '') == '';
});
// if there are empty fields, then
if (empty.length) {
// slide down the drawer
drawer.slideDown(function() {
// colored flash effect
drawer.css("backgroundColor", "#229");
setTimeout(function() {
drawer.css("backgroundColor", "#fff");
}, 1000);
});
// add a CSS class name "error" for empty & required fields
empty.addClass("error");
// cancel seeking of the scrollable by returning false
return false;
// everything is good
} else {
// hide the drawer
drawer.slideUp();
}
}
// update status bar
$("#status li").removeClass("active").eq(i).addClass("active");
});
// if tab is pressed on the next button seek to next page
root.find("button.next").keydown(function(e) {
if (e.keyCode == 9) {
// seeks to next tab by executing our validation routine
api.next();
e.preventDefault();
}
});
});
</script>

Have the radio button names all be the same. That groups them together. Then all you have to do is make the first one have checked="true"
<input name="question" type="radio" value="a" checked="true">a) New York<br>
<input name="question" type="radio" value="b">b) Washington DC<br>
<input name="question" type="radio" value="c">c) Seattle<br>
<input name="question" type="radio" value="d">d) Portland<br>
This makes them send at least one thing. Otherwise you have to check the selected value of the input.
Also all the text inputs could just have required attribute and that would make sure something is there. HTML5 has that as validation.
http://www.w3schools.com/tags/att_input_required.asp
EDIT
Here's a fiddle I just made using jQuery. This is the true validation you want.
http://jsfiddle.net/slyfox13/H9Dw2/

Your radios should all have the same name. In the code about, you literally have 4 different inputs each as their own form data param, not 4 radio inputs affecting one form data param.

The input names not all need to be the same, i.e. and then check that the value of questionone is not null to validate

You have to give same name for all radio input tag.
like this
<div class="questionsone">
<input name="qstn1" type="radio" value="a">a) New York<br>
<input name="qstn1" type="radio" value="b">b) Washington DC<br>
<input name="qstn1" type="radio" value="c">c) Seattle<br>
<input name="qstn1" type="radio" value="d">d) Portland<br>
</div>

Set same name to all radio buttons since Radio buttons are there for a single choice.
<input name="questionone" type="radio" value="a">a) New York<br>
<input name="questionone" type="radio" value="b">b) Washington DC<br>
<input name="questionone" type="radio" value="c">c) Seattle<br>
<input name="questionone" type="radio" value="d">d) Portland<br>
Validation using jQuery:
if($("input[type=radio,name=questionone]:checked").length >0)
{
/* do something */
}

First you need to change your radio buttons names to all be the same thing. ex
<ul>
<li class="required">
<label>What is the U.S. Capital? Please select your answer below:</label>
<div class="questionsone">
<input name="question" type="radio" value="a">a) New York<br>
<input name="question" type="radio" value="b">b) Washington DC<br>
<input name="question" type="radio" value="c">c) Seattle<br>
<input name="question" type="radio" value="d">d) Portland<br>
</div>
</li>
</ul>
So that you will only be able to select one. Next you need to create a document.ready() function. Add this code to your document.ready()
$( document ).ready(function() {
function RadioTest(){
inputs = document.getElementsByName('question');
for (index = 0; index < inputs.length; ++index) {
if(inputs[index].checked!=true){
alert("radio not selected");
return false;
}
}
}
});

Not able to get the value of Radio Button

<input type="radio" name="animal" id="cat" value="Cat" />
<label for="cat">Cat</label>
<input type="radio" name="animal" id="radio-choice-2" value="choice-2"/>
<label for="radio-choice-2">Dog</label>
<input type="radio" name="animal" id="radio-choice-3" value="choice-3" />
<label for="radio-choice-3">Hamster</label>
<input type="radio" name="animal" id="radio-choice-4" value="choice-4" />
<label for="radio-choice-4">Lizard</label>
<input type="button" value="Get Radio Button Value" onclick="getValue();"
I want to get the value of selected Radio Button on click of button I had written the code
function getValue () {
alert("Value is :"+$('input[name=animal]:checked').val());
}
But its not working and getting Undefined
Update:
I have used js of Jquery and jquerymobile
for jquery its for fine but as i am using it for mobile app so i need both the js library so in second case it didnot work.
<link rel="stylesheet" href="http://code.jquery.com/mobile/1.1.0-rc.1/jquery.mobile-1.1.0-rc.1.min.css" />
<script src="http://code.jquery.com/jquery-1.7.1.min.js"></script>
<script src="http://code.jquery.com/mobile/1.1.0-rc.1/jquery.mobile-1.1.0-rc.1.min.js"></script>
[Solved]

Hi I think you are getting the value without checking any radio button.
Load your page then select any one of radio button and then call getValue function
Alternatively you can put any radio button selected by default.
e.g.
replace first radio button with
<input type="radio" name="animal" id="cat" value="Cat" checked="true"/>
<label for="cat">Cat</label>

Try this
$("#myform input[type='radio']:checked").val();
OR
var myRadio = $('input[name=myRadio]');
//Use the filter() function, not find(). (find() is for locating child elements, whereas //filter() searches top-level elements in your selection.)
var checkedValue = myRadio.filter(':checked').val();