CODEWITHSUNDEEP
htmlformsradio-button
Jordan
Jordan

Reputation: 891

Radio Buttons "Checked" Attribute Not Working

The radio button does not show up as checked by default. I started off without a default choice doing some very simple js validation and it wasn't working. So I opted to just use default values until I figured that out and discovered that something weird is going on.

The markup is valid and I've tried in FF, Safari and Chrome. Nothing works.

I think it's a conflict with the jQuery library because the problem goes away when I remove the call script.

<label>Do you want to accept American Express?</label> Yes
<input id="amex" style="width: 20px;" type='radio' name='Contact0_AmericanExpress' value='1' /> No
<input style="width: 20px;" type='radio' name='Contact0_AmericanExpress' class='check' value='0' checked="checked" />

Upvotes: 89

Views: 272107

Answers (15)

mohammad inanloo
mohammad inanloo

Reputation: 160

Replace checked="checked" with checked={true}. Or you could even shorten it to just checked.

This is because the expected value type of the checked prop is a boolean. not a string.

Upvotes: -2

Suman Guha Neogi
Suman Guha Neogi

Reputation: 11

also try this way 

$('input:radio[name="name"][id="abcd'+no+'"]').attr("checked", "checked");

if there is <form /> tag then ("checked", true) otherwise ("checked", "checked")

Upvotes: 1

user11097803
user11097803

Reputation: 11

**Radio button aria-checked: true or false one at a time**

$('input:radio[name=anynameofinput]').change(function() {
            if (this.value === 'value1') {
                $("#id1").attr("aria-checked","true");
                $("#id2").attr("aria-checked","false");
            }
            else if (this.value === 'value2') {;
                $("#id2").attr("aria-checked","true");
                $("#id1").attr("aria-checked","false");
            }
   });

Upvotes: 1

Liutong Chen
Liutong Chen

Reputation: 3623

I could repro this by setting the name of input tag the same for two groups of input like below:

<body>
  <div>
      <div>
        <h3>Header1</h3>
      </div>
      <div>
          <input type="radio" name="gender" id="male_1" value="male"> Male<br>
          <input type="radio" name="gender" id="female_1" value="female" checked="checked"> Female<br>
          <input type="submit" value="Submit">
      </div>
  </div>


  <div>
      <div>
        <h3>Header2</h3>
      </div>
      <div>
          <input type="radio" name="gender" id="male_2" value="male"> Male<br>
          <input type="radio" name="gender" id="female_2" value="female" checked="checked"> Female<br>
          <input type="submit" value="Submit">
      </div>
  </div>
</body>

(To see this running, click here)

The following two solutions both fix the problem:

  1. Use different names for the inputs in the second group
  2. Use form tag instead of div tag for one of the groups (can't really figure out the real reason why this would solve the problem. Would love to hear some opinions on this!)

Upvotes: 4

jeeves
jeeves

Reputation: 1081

If you have multiple of the same name with the checked attribute it will take the last checked radio on the page.

<form>
    <label>Do you want to accept American Express?</label>
    Yes<input id="amex" style="width: 20px;" type="radio" name="Contact0_AmericanExpress"  />  
    maybe<input id="amex" style="width: 20px;" type="radio" name="Contact0_AmericanExpress"  checked="checked" />  
    No<input style="width: 20px;" type="radio" name="Contact0_AmericanExpress" class="check" checked="checked" />
</form>

Upvotes: 108

Sudhir Bhapkar
Sudhir Bhapkar

Reputation: 949

The jQuery documentation provides a detailed explanation for checked property vs attribute.

Accordingly, here is another way to retrieve selected radio button value

var accepted = $('input[name="Contact0_AmericanExpress"]:checked').val();

Upvotes: 3

Michael Seltenreich
Michael Seltenreich

Reputation: 3488

Radio inputs must be inside of a form for 'checked' to work.

Upvotes: 56

thePanz
thePanz

Reputation: 369

Your code is right, try to debug your JQuery script to find the issue! If you're using FF you can install an extension to debug JS (and JQuery) it's called FireBug.

Upvotes: 0

parhamparsa
parhamparsa

Reputation: 388

just add checked attribute to each radio that you want to have default checked

try this :

<input style="width: 20px;" type="radio" name="Contact0_AmericanExpress" class="check" checked/>

Upvotes: -2

Martin T.
Martin T.

Reputation: 3222

This might be it:

Is there a bug with radio buttons in jQuery 1.9.1?

In short: Don't use attr() but prop() for checking radio buttons. God I hate JS...

Upvotes: 40

Lix
Lix

Reputation: 47956

The ultimate JavaScript workaround to this annoying issue -

Simply wrap the jQuery command in a setTimeout. The interval can be extremely small, I use 10 milliseconds and it seems to be working great. The delay is so small that it is virtually undetectable to the end users.

setTimeout(function(){
  $("#radio-element").attr('checked','checked');
},10);

This will also work with

  • $("#radio-element").trigger('click');
  • $("#radio-element").attr('checked',true);
  • $("#radio-element").attr('checked',ANYTHING_THAT_IS_NOT_FALSE);

Hacky...hacky...hacky...hacky... Yes I know... hence this is a workaround....

Upvotes: 11

mentes
mentes

Reputation: 118

hi I think if you put id attribute for the second input and give it a unique id value it will work

<label>Do you want to accept American Express?</label>
Yes<input id="amex" style="width: 20px;" type='radio' name='Contact0_AmericanExpress'   value='1'/>  
No<input style="width: 20px;" id="amex0" type='radio' name='Contact0_AmericanExpress' class='check' value='0' checked="checked"/>

Upvotes: 1

Codemator
Codemator

Reputation: 513

Hey I was also facing similar problem, in an ajax generated page.. I took generated source using Webdeveloper pluggin in FF, and checked all the inputs in the form and found out that there was another checkbox inside a hidden div(display:none) with same ID, Once I changed the id of second checkbox, it started working.. You can also try that.. and let me know the result.. cheers

Upvotes: 5

Cl&#233;ment
Cl&#233;ment

Reputation: 12897

You're using non-standard xhtml code (values should be framed with double quotes, not single quotes)

Try this:

<form>
  <label>Do you want to accept American Express?</label>
  Yes<input id="amex" style="width: 20px;" type="radio" name="Contact0_AmericanExpress"  />  
  No<input style="width: 20px;" type="radio" name="Contact0_AmericanExpress" class="check" checked="checked" />
</form>

Upvotes: -2

Ben Rowe
Ben Rowe

Reputation: 28691

Just copied your code into: http://jsfiddle.net/fY4F9/

No is checked by default. Do you have any javascript running that would effect the radio box?

Upvotes: 3

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