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Check specific radio button is checked

I'm just trying to return true/false in one my my jquery methods depending on the check of a 2 radio buttons and if it's selected or not
I've tried several things but have not been able to get this right, it still submit the form without giving error that the buttons are not selected.
HTML Code
<label class="checkout-item" for="payment_1">Cash On Delivery</label>
<input type="radio" name="payment" class="radio" id="payment_1" value="3" iscod="1" onclick="selectPayment(this)">
<label class="checkout-item" for="payment_2">Credit Card / Debit Card</label>
<input type="radio" name="payment" class="radio" id="payment_2" value="9" checked="" iscod="0" onclick="selectPayment(this)">
<label class="checkout-item" for="ECS_NEEDINSURE_1">Home Delivery</label>
<input name="shipping" type="radio" id="ECS_NEEDINSURE_1" value="3" checked="true" supportcod="1" insure="0" class="radio" onclick="selectShipping(this)">
<label class="checkout-item" for="ECS_NEEDINSURE_2">Self-pickup</label>
<input name="shipping" type="radio" id="ECS_NEEDINSURE_2" value="8" supportcod="1" insure="0" class="radio" onclick="selectShipping(this)">
Javascript
function checkOrderForm(frm) {
var paymentSelected = false;
var shippingSelected = false;
// Check whether the payment method is selected
for (i = 0; i < frm.elements.length; i++) {
if (frm.elements[i].name == 'shipping' && frm.elements[i].checked) {
shippingSelected = true;
}
if (frm.elements[i].name == 'payment' && frm.elements[i].checked) {
paymentSelected = true;
}
}
if (!shippingSelected) {
alert(flow_no_shipping);
return false;
}
if (!paymentSelected) {
alert(flow_no_payment);
return false;
}

If I'm understanding your question correctly, you would only like this test to pass if BOTH of the radio buttons are checked. Currently, as long as one radio button in each group is checked, the code variable will be set to true, ignoring the state of the other radio button.
For example, if ONLY one of your shipping radio buttons was checked, the shippingSelected variable would be set to true and it would remain true.
A way to fix this is to begin with shippingSelected and paymentSelected set to true, and if one of the radio buttons are found to be unchecked, the variable will be set to false.
Here's an example:
var paymentSelected = true;
var shippingSelected = true;
// Check whether the payment method is selected
for (i = 0; i < frm.elements.length; i++) {
if (frm.elements[i].name == 'shipping' && !frm.elements[i].checked) {
shippingSelected = false;
}
if (frm.elements[i].name == 'payment' && !frm.elements[i].checked) {
paymentSelected = false;
}
}

You can use $("#payment_1").checked to check whether the radio is checked or not. Similarly you could use other ID's to check whether they are selected or not.
Here is the fiddle:
https://jsfiddle.net/bf8bo43t/

Try below code,
HTML
<form method="post" name="frm_payment_types">
<label class="checkout-item" for="payment_1">Cash On Delivery</label>
<input type="radio" name="payment" class="radio" id="payment_1" value="3" iscod="1" onclick="selectPayment(this)">
<label class="checkout-item" for="payment_2">Credit Card / Debit Card</label>
<input type="radio" name="payment" class="radio" id="payment_2" value="9" iscod="0" onclick="selectPayment(this)">
<label class="checkout-item" for="ECS_NEEDINSURE_1">Home Delivery</label>
<input name="shipping" type="radio" id="ECS_NEEDINSURE_1" value="3" supportcod="1" insure="0" class="radio" onclick="selectShipping(this)">
<label class="checkout-item" for="ECS_NEEDINSURE_2">Self-pickup</label>
<input name="shipping" type="radio" id="ECS_NEEDINSURE_2" value="8" supportcod="1" insure="0" class="radio" onclick="selectShipping(this)">
<br />
<input type="submit" name="submit" onclick="return checkOrderForm();" />
</form>
Javascript
<script type="text/javascript">
function validateForm(){
var payment_1 = document.getElementById('payment_1');
var payment_2 = document.getElementById('payment_2');
var ECS_NEEDINSURE_1 = document.getElementById('ECS_NEEDINSURE_1');
var ECS_NEEDINSURE_2 = document.getElementById('ECS_NEEDINSURE_2');
if((payment_1.checked == true || payment_2.checked == true) && (ECS_NEEDINSURE_1.checked == true || ECS_NEEDINSURE_2.checked == true)){
return true;
}
else if(payment_1.checked == false && payment_2.checked == false){
alert("Please select Cash On Delivery or Credit Card / Debit Card.");
}
else if(ECS_NEEDINSURE_1.checked == false && ECS_NEEDINSURE_2.checked == false){
alert("Please select Home Delivery or Self-pickup.");
}
return false;
}
</script>

Dynamically, check radio button with for loop

I'm trying to create a 5 star radio picker.
This is the 1 of the radio buttons:
<input onclick="check(3)" type="radio" name="three" id="num_3_star" value="3">
After the method gets called and "3" is passed on this is my javascript function:
function check(stars)
{
for(i = 0 ; i < stars; i++)
{
document.getElementById("num_" + stars + "_star").checked = true;
}
}
When I run the code, it does not perform the checked to = true, though if remove the for loop, it works just fine.
Any ideas why the for loop is preventing from checking the radio boxes?
This is my entire code:
<script>
function check(stars)
{
for(i = 0 ; i < stars; i++)
{
document.getElementById("num_" + stars + "_star").checked = true;
}
}
</script>
<form>
<input onclick="check(1)" type="radio" name="one" id="num_1_star" value="1">
<input onclick="check(2)" type="radio" name="two" id="num_2_star" value="2">
<input onclick="check(3)" type="radio" name="three" id="num_3_star" value="3">
<input onclick="check(4)" type="radio" name="four" id="num_4_star" value="4">
<input onclick="check(5)" type="radio" name="five" id="num_5_star" value="5">
</form>
Thanks!

i had to be 1 initially as ids are starting from 1
Also reset all the checked status when click is initiated! Use i instead of stars in getElementById
Try this:
function check(stars) {
for (var j = 1; j <= 5; j++) {
document.getElementById("num_" + j + "_star").checked = false;
}
for (var i = 1; i <= stars; i++) {
document.getElementById("num_" + i + "_star").checked = true;
}
}
<input onclick="check(1)" type="radio" name="one" id="num_1_star" value="1">
<input onclick="check(2)" type="radio" name="two" id="num_2_star" value="2">
<input onclick="check(3)" type="radio" name="three" id="num_3_star" value="3">
<input onclick="check(4)" type="radio" name="four" id="num_4_star" value="4">
<input onclick="check(5)" type="radio" name="five" id="num_5_star" value="5">

Put var before the iteration variable i. You are creating a global variable.

Count the number of checked checkboxes in HTML

So basically i want to count the number of checkboxes that are ticked. I get my code to the point where it counts them successfully, but I want to put in an alert that shows the number of checkboxes ticked, the code does this but doesn't show the total count, it increments the total every refresh. I just want to know how I can show a total count.
It should display the total when the radio button 'yes' is clicked.
<br />Apples
<input type="checkbox" name="fruit" />Oranges
<input type="checkbox" name="fruit" />Mango
<input type="checkbox" name="fruit" />
<br />Yes
<input type="radio" name="yesorno" id="yes" onchange="checkboxes()"
function checkboxes(){
var inputElems = document.getElementsByTagName("input"),
count = 0;
for (var i=0; i<inputElems.length; i++) {
if (inputElems[i].type === "checkbox" && inputElems[i].checked === true){
count++;
alert(count);
}
}}

This should do the trick:
alert(document.querySelectorAll('input[type="checkbox"]:checked').length);

try this using jquery
Method 1:
alert($('.checkbox_class_here :checked').size());
Method 2:
alert($('input[name=checkbox_name]').attr('checked'));
Method: 3
alert($(":checkbox:checked").length);

Try this code
<br />Apples
<input type="checkbox" name="fruit" checked/>Oranges
<input type="checkbox" name="fruit" />Mango
<input type="checkbox" name="fruit" />
<br />Yes
<input type="radio" name="yesorno" id="yes" onClick="checkboxes();" />
Javascript
function checkboxes()
{
var inputElems = document.getElementsByTagName("input"),
count = 0;
for (var i=0; i<inputElems.length; i++) {
if (inputElems[i].type == "checkbox" && inputElems[i].checked == true){
count++;
alert(count);
}
}
}
FIDDLE DEMO

Thanks to Marlon Bernardes for this.
alert(document.querySelectorAll('input[type="checkbox"]:checked').length);
If you have more than one form with different checkbox names in each, the above code will count all checkboxes in all forms.
To get over this, you can modify it to isolate by name.
var le = document.querySelectorAll('input[name="chkboxes[]"]:checked').length;

The initial code was very nearly right. the line
alert(count);
was in the wrong place. It should have come after the second closing brace like this:-
function checkboxes()
{
var inputElems = document.getElementsByTagName("input"),
count = 0;
for (var i=0; i<inputElems.length; i++) {
if (inputElems[i].type == "checkbox" && inputElems[i].checked == true){
count++;
}
}
alert(count);
}
In the wrong place it was giving you an alert message with every checked box.

var checkboxes = document.getElementsByName("fruit");
for(i = 0 ; i<checkboxes.length; i++)
{
if(checkboxes[i].checked==0){checkboxes.splice(i,1);}
}
alert("Number of checked checkboxes: "+checkboxes.length);

function checkboxes(){
var inputs = document.getElementsByTagName("input");
var inputObj;
var selectedCount = 0;
for(var count1 = 0;count1<inputs.length;count1++) {
inputObj = inputs[count1];
var type = inputObj.getAttribute("type");
if (type == 'checkbox' && inputObj.checked) {
selectedCount++;
}
}
alert(selectedCount);
}
<html>
<body>Fruits
<br />
<input type="checkbox" name="fruit" checked/>Oranges
<input type="checkbox" name="fruit" />Mango
<input type="checkbox" name="fruit" />Apple
<br />Yes
<input type="radio" name="yesorno" id="yes" onClick="checkboxes();"/>
</body>
</html>

Javascript - get the radio button index number

**I have a php page with an array of option like this... and I need to get by javascript **the index of the selected option. Above I put the code of the javascript that is not working... Any help will be appreciated!
<input type="radio" name="option[1]" value="1">
<input type="radio" name="option[1]" value="2">
<input type="radio" name="option[1]" value="3">
<input type="radio" name="option[1]" value="4">
<input type="radio" name="option[2]" value="1">
<input type="radio" name="option[2]" value="2">
<input type="radio" name="option[2]" value="3">
<input type="radio" name="option[2]" value="4">
<input type="radio" name="option[3]" value="1">
<input type="radio" name="option[3]" value="2">
<input type="radio" name="option[3]" value="3">
<input type="radio" name="option[3]" value="4">
...
Can anyone help me?
I am trying something like this but it didn´t work
<script type="text/javascript">
function validateForm(form) {
for (var i = 0; i < form.elements.length; i++ ) {
if (form.elements[i].type == 'radio') {
if (form.elements[i].checked == true) {
if (form.elements[i].value == 1 || form.elements[i].value == 6){
var comentario=document.getElementsByName('comentario[]'[i]);
var opcao = form.elements[i];
alert(clickedElm(opcao));
submitFlag = true;
if (comentario.value.length < 100){
submitFlag=false;
alert(i);
}
return submitFlag;
}
}
}
}
}
function clickedElm(element)
{
var index = 0;
for (var i = 0; document.forms[0].elements.length; i++)
{
if (document.forms[0].elements[i] == element)
{
index = i;
}
}
return index;
}
</script>

If I correctly understood the questuion, it can be solved like this:
$(document).on('change','input[type=radio]', function(){
alert($(this).prop('name').charAt(7));
});
Here is fiddle http://jsfiddle.net/Goodluck/ynkgr/

the name attribute is used for group the radio buttons, you have to use the id attribute to access the control asking if it's checked.
Example
<html>
<head>
</head>
<body>
<form id="frmTest">
<input type="radio" name="option[1]" id="option1-item1" value="1" >
<input type="radio" name="option[1]" id="option1-item2" value="2" >
<input type="radio" name="option[1]" id="option1-item3" value="3" >
<input type="radio" name="option[1]" id="option1-item4" value="4" >
<input type="radio" name="option[2]" id="option2-item1" value="1" >
<input type="radio" name="option[2]" id="option2-item2" value="2" >
<input type="radio" name="option[2]" id="option2-item3" value="3" >
<input type="radio" name="option[2]" id="option2-item4" value="4" >
<input type="radio" name="option[3]" id="option3-item1" value="1" >
<input type="radio" name="option[3]" id="option3-item2" value="2" >
<input type="radio" name="option[3]" id="option3-item3" value="3" >
<input type="radio" name="option[3]" id="option3-item4" value="4" >
</form>
<input type="button" onclick="validateForm(document.getElementById('frmTest'))" />
<script type="text/javascript">
function validateForm(form) {
for (var i = 0; i < form.elements.length; i++ ) {
if (form.elements[i].type == 'radio') {
if (form.elements[i].checked == true) {
if (form.elements[i].value == 1 || form.elements[i].value == 6){
var comentario=document.getElementsByName('comentario[]'[i]);
var opcao = form.elements[i];
alert(clickedElm(opcao));
submitFlag = true;
if (comentario.value.length < 100){
submitFlag=false;
alert(i);
}
return submitFlag;
}
}
}
}
}
function clickedElm(element)
{
return element.id;
}
</script>
</body>
</html>

You forgot to check the condition in this line:
(the loop in function clickedElm)
for (var i = 0; document.forms[0].elements.length; i++)
So, you enter in an infinite loop.
the correct line:
for (var i = 0; i < document.forms[0].elements.length; i++)

only select one checkbox

I would like to build a javascript so a user can choose only one option between the the mentioned below. Could you give me some pointers how to do this since I am a javascript noob.
Thank you!
This is the picture of the part of a menu
<td><label for="dock_books_search_visible_online"> Visible online?</label></td>
<td><input type="checkbox" name="option" value="checkedVisibleOk" id="dock_books_visible_ok" /> </td>
<td><label for="dock_books_search_visible_online_yes"> Yes</label></td>
<td><input type="checkbox" name="option" value="checkedVisibleNok" id="dock_books_visible_nok" /> </td>
<td><label for="dock_books_search_visible_online_no"> No</label></td>

For single selection from multiple options we use Radio Buttons not CheckBoxes.
You should use some thing like this.
<input type="radio" name="option" value="Yes" id="yes" />
<input type="radio" name="option" value="No" id="no" />
But still if you want to go the other way round, Just add the following script in your head tag:
<script type="text/javascript" src="http://ajax.googleapis.com/ajax/libs/jquery/1.4.2/jquery.min.js"></script>
<script>
$(document).ready(function(){
$(':checkbox').bind('change', function() {
var thisClass = $(this).attr('class');
if ($(this).attr('checked')) {
$(':checkbox.' + thisClass + ":not(#" + this.id + ")").removeAttr('checked');
}
else {
$(this).attr('checked', 'checked');
}
});
});
</script>
Here is the fiddle for above.
Hope this helps.

This looks like a job for radio buttons, not checkboxes.

you got a point to use radio buttons any way here is the javascript solution
i used it in my project when there is search criteria and search result in data grid by
ajax having 13 records when i check one record it disables the rest
code for javascript enable disable check boxes jsfiddle
<form name="mainForm" method="GET">
Visible online?
<input type="checkbox" name="option" value="checkedVisibleOk" id="option" onclick="changeCheckBox();"/>
yes
<input type="checkbox" name="option" value="checkedVisibleNok" id="option" onclick="changeCheckBox();"/>
no
</form>
<script>
var serNoChecked="";
function changeCheckBox() {
try {
var max = document.mainForm.option.length;
var count = 0;
for (var i = 0; i < max; i++) {
if (document.mainForm.option[i].checked == true) {
count++;
serNoChecked = i;
}
}
if (count == 1) {
for (var i = 0; i < max; i++) {
if (document.mainForm.option[i].checked == false) {
document.mainForm.option[i].disabled = true;
}
}
}
else if (count == 0) {
for (var i = 0; i < max; i++) {
document.mainForm.option[i].disabled = false;
}
}
if (null == max) return false;
if (count == 0) {
return true;
}
else if (count > 0) {
return false;
}
}
catch (e) {
alert(e.message);
}
}
</script>

Try using Radio Button's, Give them the same name to group them and only allow 1 to be selected:
<td>
<label for="dock_books_search_visible_online"> Visible online?</label>
</td>
<td>
<input type="radio" name="option" value="checkedVisibleOk" id="dock_books_visible_ok" />
</td>
<td>
<label for="dock_books_search_visible_online_yes"> Yes</label>
</td>
<td><input type="radio" name="option" value="checkedVisibleNok" id="dock_books_visible_nok" />
</td>
<td>
<label for="dock_books_search_visible_online_no"> No</label>
</td>
Check this JSFiddle.

Hi why are you using checkbox? Checkboxes are not for the functionality that you want. Radio buttons are exact what you want to use.
<form>
<input type="radio" name="sex" value="male" /> Male<br />
<input type="radio" name="sex" value="female" /> Female
</form>
For further details look here

function toggle(chkBox, field) {
for ( var i = 0; i < field.length; i++) {
field[i].checked = false;
}
chkBox.checked = true;
}
<td>
<INPUT type="checkbox" name="xyz" onClick="toggle(this,document.myform.xyz);" value="${incident.incidentID}">
</td>

Use radio buttons and ensure that the name tag is consistent with all options and it'll automatically select just one w/o the need for additional code or JS.