Find out whether radio button is checked with JQuery?

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I can set a radio button to checked fine, but what I want to do is setup a sort of 'listener' that activates when a certain radio button is checked.

Take, for example the following code:

$("#element").click(function()
{ 
    $('#radio_button').attr("checked", "checked");
});

it adds a checked attribute and all is well, but how would I go about adding an alert. For example, that pops up when the radio button is checked without the help of the click function?

$('#element').click(function() {
   if($('#radio_button').is(':checked')) { alert("it's checked"); }
});

Find out whether radio button is checked with JQuery?, Yesterday I need to find out if radio button is checked/selected or not using jQuery. I was knowing one way to find out but there are couple of� I was knowing one way to find out but there are couple of other ways as well to find out if radio button is checked using jQuery. In this post, you will find all different possible ways. 1. First Way: Below single line of code will provide the status of radio button using jQuery. It checks whether the checked property is checked or not using jQuery and will return true or false. Below code will work with jQuery 1.7.2 version.

If you have a group of radio buttons sharing the same name attribute and upon submit or some event you want to check if one of these radio buttons was checked, you can do this simply by the following code :

$(document).ready(function(){
  $('#submit_button').click(function() {
    if (!$("input[name='name']:checked").val()) {
       alert('Nothing is checked!');
        return false;
    }
    else {
      alert('One of the radio buttons is checked!');
    }
  });
});

Source

jQuery API Ref

Find out if radio button is checked with JQuery?, show." This part of my form doesn't appear on a page reload, even though the radio is selected. Thanks for your responses! I found the problem. Actually, the two first ways to do it are working. The point is I used jqueryUI to transform a set of 3 radio buttons into a button set with this code : jQuery("#type").buttonset(); but making this change before checking the radio was breaking the radio set (don't know why).

As Parag's solution threw an error for me, here's my solution (combining David Hedlund's and Parag's):

if (!$("input[name='name']").is(':checked')) {
   alert('Nothing is checked!');
}
else {
   alert('One of the radio buttons is checked!');
}

This worked fine for me!

Check if radio button is checked or selected using jQuery, Examples: Determine how many input elements are checked. <input type=" checkbox" name="newsletter" value="Daily"> Identify the checked radio input. // get radio buttons value console.log( "radio1: " + $('input[id=radio1]:checked', '#toggle-form').val() ); console.log( "radio2: " + $('input[id=radio2]:checked', '#

You'd have to bind the click event of the checkbox, as the change event doesn't work in IE.

$('#radio_button').click(function(){
    // if ($(this).is(':checked')) alert('is checked'); 
    alert('check-checky-check was changed');
});

Now when you programmatically change the state, you have to trigger this event also:

$('#radio_button').attr("checked", "checked");
$('#radio_button').click();

How to check to see if a radio button is selected?, The prop() method require jQuery 1.6 and above. Let's check out the following example to understand how it basically works: Example. Try this code �. Using Input Radio checked property: The Input Radio checked property is used to return the checked status of an Input Radio Button. Use document.getElementById (‘id’).checked method to check whether the element with selected id is check or not. If it is checked then display its corresponding result otherwise check the next statement.

//Check through class

if($("input:radio[class='className']").is(":checked")) {
     //write your code         
}

//Check through name

if($("input:radio[name='Name']").is(":checked")) {
         //write your code         
}

//Check through data

if($("input:radio[data-name='value']").is(":checked")) {
         //write your code         
}

:checked Selector, How to disable a button in jQuery dialog from a function ? sayantanm19. Check out this Author's contributed articles. If you like GeeksforGeeks and would like� Before submitting the value of the radio button group, it is required to check whether the user selects one radio button in each group. Because it’s always a good idea to validate the value in the client before sending data to the server side. Using jQuery you can easily check if radio is checked. But sometimes you need to validate whether the radio button in multiple groups is checked or not.

How to Check or Uncheck Radio Button Dynamically Using jQuery, How to check an element has certain CSS style using jQuery ? sayantanm19. Check out this Author's contributed articles. If you like GeeksforGeeks and would like� I can set a radio button to checked fine, but what I want to do is setup a sort of 'listener' that activates when a certain radio button is checked. Take, for example the following code: $("#el

How to know which radio button is selected using jQuery , Radio button validation using jQuery - The example script to check if one radio and each question has two radio buttons to select an option. How to know which radio button is selected using jQuery? To check which radio button is selected in a form, we first get the desired input group with the type of input as an option and then the value of this selection can then be accessed by the val () method. This returns the name of the option that is currently selected.

How to check a radio button with jQuery?, jquery set radio button checked based on value (10) $('.radio-button-class-name').is('checked') didn't work for me, but the next code worked well:

Comments
  • possible duplicate of Check of specific radio button is checked
  • related Monitoring when a radio button is unchecked stackoverflow.com/questions/5824639/…
  • Bingo! thanks David. So would I have to invoke an action (click etc) to show the alert? Is there a way to do this without clicking?
  • This doesn't solve the "without the help of the click function", does it?
  • @Znarkus: OP appears satisfied. would you argue that you own use of ('#radio_button').click is without click?
  • @David Second line should be if ($('#radio_button').is(':checked'))) { alert("it's checked"); } - you forgot the jQuery $ sign and then need to wrap it all in some more parenthesis.
  • @zua: you're right! it even had a syntax error, the way it was before (unmatched brackets). fixed
  • This did not work for me. If I alert($("input[@name='shipping_method']:checked").val()); it still gives me the value even if the radio button is not selected.
  • Note: If you have several forms with groups of radio buttons using the same name, you need to make sure to check only those of the form that is submitted. One option to do this is using the find method on the form: $('#myform').submit(function(event){ if (!$(this).find("input[name='name']:checked").val()) {
  • Indeed .prop() is much faster, and simply easier to type.
  • Most useful answer
  • Since your used it with a class instead of an ID, it would have returned a nodelist, instead of an element. $('.radio-button-class-name').first().is(':checked') should have worked.
  • This sets the value of the checked property, instead of querying it.