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Radio Button Onclick Event Requires Two Clicks to Fire/Execute on Firefox

Hoping someone has a solution to this weirdness on Firefox 3.
I basically have 3 radio buttons and 3 text input fields (see following code):
<input type="radio" name="group1" id="preloaded" value="preloaded_img" checked="checked" onclick="SetVals();" />
<input type="text" name="text1" id="text1" />
<input type="radio" name="group1" id="custom" value="custom_img" onclick="SetVals();" />
<input type="text" name="text2" id="text2" />
<input type="radio" name="group1" id="vector" value="vector_img" onclick="SetVals();" />
<input type="text" name="text3" id="text3" />
Now, every time I click on a specific Radio Button, the text input elements for the other two buttons should get cleared and also become disabled (see following code).
function SetVals() { // using JQuery + straight JS for this...
$(document).ready(function() {
$(":radio").click(function(event) {
// use event.target to determine which radio button was clicked
if (event.target.id=="preloaded") {
document.getElementByID("text1").disabled=false;
$("#text2").val("");
$("#text3").val("");
document.getElementById("text2").disabled=true;
document.getElementById("text3").disabled=true;
} else if (event.target.id=="custom") {
document.getElementByID("text2").disabled=false;
$("#text1").val("");
$("#text3").val("");
document.getElementById("text1").disabled=true;
document.getElementById("text3").disabled=true;
} else if (event.target.id=="vector") {
document.getElementByID("text3").disabled=false;
$("#text1").val("");
$("#text2").val("");
document.getElementById("text1").disabled=true;
document.getElementById("text2").disabled=true;
}
});
});
}
Also, when the page is initially loaded, the text2 and text3 input fields are disabled via javascript as the text1 field is checked by default:
document.getElementById("text2").disabled=true;
document.getElementById("text3").disabled=true;
The problem I'm having is that it requires 2 (two) clicks to get this to work on Firefox. On Internet Explorer, it works as expected.
So, when clicking on a radio button the first time - nothing happens. When clicking on it a second time, that's when the Onclick Event is triggered.
NOTE: I'm using JQuery for this, but have also used straight Javascript to no avail.
You can simply copy and paste my code on an editor and open the page with Firefox to see issue firsthand.
Has anybody else encountered this? Is it some sort of Firefox bug? If so, is there a work-around?
Any and all help, comments, suggestions, and input are welcome.
Thanks in advance!

Since you are using jQuery to assign the event handler for the radio button click, you can remove the onClick attribute.
This should work for you:
$(function() {
$(":radio").click(function(event) {
if (this.id == "preloaded") {
$("#text1").removeAttr("disabled");
$("#text2, #text3").val("").attr("disabled", true);
} else if (this.id == "custom") {
$("#text2").removeAttr("disabled");
$("#text1, #text3").val("").attr("disabled", true);
} else if (this.id == "vector") {
$("#text3").removeAttr("disabled");
$("#text1, #text2").val("").attr("disabled", true);
}
});
$("#text2, #text3").val("").attr("disabled", true);
});
Code example on jsfiddle.
Side note: since you are using jQuery you might as well use jQuery for almost all dom interactions since mixing the two will eventually lead to some pain. Let jQuery hide the inconsistencies in browsers.

You started using jQuery, and then returned to vanilla JavaScript... but you mis-typed the getElementById() function.
I would stick with jQuery if you have it, it will avoid IE bugs with this particular method too.
Cleaner HTML
<input type="radio" name="group1" id="preloaded" value="preloaded_img" checked="checked"/>
<input type="text" name="text1" id="text1"/>
<input type="radio" name="group1" id="custom" value="custom_img"/>
<input type="text" name="text2" id="text2"/>
<input type="radio" name="group1" id="vector" value="vector_img"/>
<input type="text" name="text3" id="text3"/>
and the jQuery...
$(document).ready(function(){
//bind the click event to the radio buttons
$(':radio').click(function(){
var radioID = $(this).attr('id');
if(radioID == 'preloaded'){
$('#text1').removeAttr('disabled');
$('#text2, #text3').val('').attr('disabled','disabled');
} else if(radioID == 'custom'){
$('#text2').removeAttr('disabled');
$('#text1, #text3').val('').attr('disabled','disabled');
} else if(radioID == 'vector'){
$('#text3').removeAttr('disabled');
$('#text1, #text2').val('').attr('disabled','disabled');
}
});
});

You could try the .change() event handler. I think that could work better.
EDIT: There are issues with the .change() event and IE.

Observing change in radio button selection using Prototype JS

I'm relatively new to Prototype JS (v1.7), and I'm stuck on something. I'm trying to detect when a change in the radio button selection occurs. Here's the code:
Radio buttons:
<input class="amounts" type="radio" name="amount" id="amount-1" value="1" />
<input class="amounts" type="radio" name="amount" id="amount-2" value="2" />
<input class="amounts" type="radio" name="amount" id="amount-3" value="3" />
Javascript:
Here's a stab I took at it, which doesn't work:
Event.observe($$('amounts'), 'change', function(event) {
alert('change detected');
});
When the form loads, no radio buttons are checked. I'd like the Javascript to detect these events:
A radio button is selected when none was previously selected
The radio button selection changes
Any help would be greatly appreciated.

It doesn't work because $$ returns an array of elements and Event needs a single element. Also $$('amounts') doesn't match any elements, there are no <amounts> tags.
A better way is to use a single ancestor element which is easy to identify.
<form id="amounts-form">
<input class="amounts" type="radio" name="amount" id="amount-1" value="1" />
<input class="amounts" type="radio" name="amount" id="amount-2" value="2" />
<input class="amounts" type="radio" name="amount" id="amount-3" value="3" />
</form>
Now there is a unique ID to work with we can use Event.on
$('amounts-form').on('change', '.amounts', function(event) {
alert('change detected');
});
Notice the events are being filtered by '.amounts', the period says to use the class name.
If you're using FireBug for FireFox or Chrome's developer tools then you can test parts of your script directly in the console. It really helps to find if a selector is matching the elements you think it is by typing $$('.amounts')

Alternegro's answer attempts to use an iterator to attach the event handler directly to the "amount" radio elements but doesn't work for a few reasons:
The "$" function doesn't take css selectors as parameters, only ids. Use "$$" instead.
The css "id" attribute selector should include square braces "[]". It's also spelled wrong. "amounts-" should be "amount-" to match the ids in the example. Or just use a class selector instead: ".amounts".
There is no "change" method that can be called on enumerables. Use invoke or some other enumerable method instead.
This one should work:
$$("[id^=amount-]").invoke(
'on',
'change',
function(){alert("hello " + this.id)}
)
(YMMV using "this" in the event handler. I only checked the code in Firefox)

Its more efficient to just give those checkboxes the same class but u can also try
$("id^=amounts-").change(function(){alert("blah blah")})

checkbox to disable/enable input

I am using js to , onclick of a checkbox, it enables or disables text input.
It works, until I put it into a live form with google jquery api.
Weird but.. must be a conflict somewhere.
The form element is: ( code isnt adding to this post properly )
<input type="checkbox" name="others" onclick="enable_text(this.checked)" class="medium" /></div>
Name on credit card if different from above
The js is:
function enable_text(status)
{
status=!status;
document.form1.other_name.disabled = status;
}
What am I doing wrong, I have used body onload handler.
<body onload=enable_text(false);>
JS FIDDLE : http://www.jsfiddle.net/ozzy/H8VPY/4/

Here, a jQuery solution:
$("input:checkbox").click(function() {
$("input:text").attr("disabled", !this.checked);
});
Just replace these generic selectors with your more specific ones.
In addition to this code, you will probably also want to make the text-box disabled (initially).
<input type="text" disabled="disabled" />
Working demo: http://www.jsfiddle.net/H8VPY/11/

There are several problems in your jsfiddle demo.
The <script> and the comment there around should be removed.
A <form name="form1"> is missing which caused document.form1 to return nothing.
The onLoad option on left menu should be a no wrap (head) since it's just a function.
Updated demo: http://www.jsfiddle.net/PPZYm/

Live Example
function enable_text(status) {
status = (status) ? false : true; //convert status boolean to text 'disabled'
document.form1.other_name.disabled = status;
}
Note
You also need to wrap your div in the jsfiddle example with a <form> tag with the name form1 for it to properly work
<div class="controlset-pad">
<input type="checkbox" name="others" onclick="enable_text(this.checked)" class="medium" />
</div>
<form name="form1">
<div class="field4">
<label>Name on credit card if different from above</label><input type="text" name="other_name" class="medium" disabled="disabled" />
</div>
</form>

.checked=true not working with jquery $ function

i want to select a checkbox when a button is clicked.
<form action="" method="post" id="form2">
<input type="checkbox" id="checkone" value="one" name="one" />
<input type="button" value="Click me" id="buttonone"/>
</form>
when i tried the following, the checkbox was not getting selected
$('#buttonone').click(function() {
$('#checkone').checked=true;
});
then i tried:
$('#buttonone').click(function() {
document.getElementById('checkone').checked=true;
});
this time the checkbox got selected. why isn't it getting selected with the jquery $ function?

Try
$('#checkone').attr('checked', true);
or
$('#checkone').get(0).checked = true;
or
$('#checkone')[0].checked = true; // identical to second example
The reason your first code didn't work is because you were trying to set the checked property on a jQuery object which will have no visible effect as it only works on the native DOM object.
By calling get(0) or accessing the first item [0], we retrieve the native DOM element and can use it normally as in your second example. Alternatively, set the checked attribute using jQuery's attr function which should work too.

You need to use .attr() for the jQuery object, like this:
$('#buttonone').click(function() {
$('#checkone').attr('checked', true);
});
But it's better to do it the DOM way, like this:
$('#buttonone').click(function() {
$('#checkone')[0].checked = true; //get the DOM element, .checked is on that
});
Or, completely without jQuery:
document.getElementById('buttonone').onclick = function() {
document.getElementById('checkone').checked = true;
};

None of these answers worked for me because I incorrectly had multiple radios with the same name attributes:
<div id="group-one">
<input type="radio" name="groups" value="1" checked="checked" />
<input type="radio" name="groups" value="2" />
</div>
<div id="group-two">
<input type="radio" name="groups" value="1" checked="checked" />
<input type="radio" name="groups" value="2" />
</div>
Javascript won't recognize the checked attribute (obviously). This was a result of using include to add a similar section of HTML multiple times. Obviously, clicking on a radio button will uncheck the radio toggles with the same name.
Here's a jsfiddle to show that two radio elements can have the attribute checked but only the last one is actually checked:
http://jsfiddle.net/bozdoz/5ecq8/
Again, pretty obvious, but possibly something to watch out for: remove id and name attributes from files that you intend to include into other files multiple times.

Try
$('#checkone').attr('checked', true);
You don't have direct access to DOM object properties because jQuery operates on collections ($(selector) is an array). That's why you have functions defined to manipulate the contents of the returned elements.

try
$('#checkone').attr('checked', true);
cleary googling for "jquery check a checkbox" was the way to go

Or you could simply do
$('#buttonone').click(function() {
$('#checkone')[0].checked=true;
});
It is because ".checked" is not part of jQuery and you are trying to use it on a jQuery object. If you index a jQuery object at [0] you get the raw Javascript object which ".checked" exists on.
More here: http://phrappe.com/javascript/convert-a-jquery-object-to-raw-dom-object/

try this
$('#buttonone').click(function() {
$('#checkone').prop('checked', true);
});

In jQuery, how do I select an element by its name attribute?

I have 3 radio buttons in my web page, like below:
<label for="theme-grey">
<input type="radio" id="theme-grey" name="theme" value="grey" />Grey</label>
<label for="theme-pink">
<input type="radio" id="theme-pink" name="theme" value="pink" />Pink</label>
<label for="theme-green">
<input type="radio" id="theme-green" name="theme" value="green" />Green</label>
In jQuery, I want to get the value of the selected radio button when any of these three are clicked. In jQuery we have id (#) and class (.) selectors, but what if I want to find a radio button by its name, as below?
$("<radiobutton name attribute>").click(function(){});
Please tell me how to solve this problem.

This should do it, all of this is in the documentation, which has a very similar example to this:
$("input[type='radio'][name='theme']").click(function() {
var value = $(this).val();
});
I should also note you have multiple identical IDs in that snippet. This is invalid HTML. Use classes to group set of elements, not IDs, as they should be unique.

To determine which radio button is checked, try this:
$('input:radio[name=theme]').click(function() {
var val = $('input:radio[name=theme]:checked').val();
});
The event will be caught for all of the radio buttons in the group and the value of the selected button will be placed in val.
Update: After posting I decided that Paolo's answer above is better, since it uses one less DOM traversal. I am letting this answer stand since it shows how to get the selected element in a way that is cross-browser compatible.

$('input:radio[name=theme]:checked').val();

another way
$('input:radio[name=theme]').filter(":checked").val()

This works great for me. For example you have two radio buttons with the same "name", and you just wanted to get the value of the checked one. You may try this one.
$valueOfTheCheckedRadio = $('[name=radioName]:checked').val();

The following code is used to get the selected radio button value by name
jQuery("input:radio[name=theme]:checked").val();
Thanks
Adnan

For anyone who doesn't want to include a library to do something really simple:
document.querySelector('[name="theme"]:checked').value;
jsfiddle
For a performance overview of the current answers check here

I found this question as I was researching an error after I upgraded from 1.7.2 of jQuery to 1.8.2. I'm adding my answer because there has been a change in jQuery 1.8 and higher that changes how this question is answered now.
With jQuery 1.8 they have deprecated the pseudo-selectors like :radio, :checkbox, :text.
To do the above now just replace the :radio with [type=radio].
So your answer now becomes for all versions of jQuery 1.8 and above:
$("input[type=radio][name=theme]").click(function() {
var value = $(this).val();
});
You can read about the change on the 1.8 readme and the ticket specific for this change as well as a understand why on the :radio selector page under the Additional Information section.

If you'd like to know the value of the default selected radio button before a click event, try this:
alert($("input:radio:checked").val());

You can use filter function if you have more than one radio group on the page, as below
$('input[type=radio]').change(function(){
var value = $(this).filter(':checked' ).val();
alert(value);
});
Here is fiddle url
http://jsfiddle.net/h6ye7/67/

<input type="radio" name="ans3" value="help">
<input type="radio" name="ans3" value="help1">
<input type="radio" name="ans3" value="help2">
<input type="radio" name="ans2" value="test">
<input type="radio" name="ans2" value="test1">
<input type="radio" name="ans2" value="test2">
<script type="text/javascript">
var ans3 = jq("input[name='ans3']:checked").val()
var ans2 = jq("input[name='ans2']:checked").val()
</script>

If you want a true/false value, use this:
$("input:radio[name=theme]").is(":checked")

Something like this maybe?
$("input:radio[name=theme]").click(function() {
...
});
When you click on any radio button, I believe it will end up selected, so this is going to be called for the selected radio button.

I you have more than one group of radio buttons on the same page you can also try this to get the value of radio button:
$("input:radio[type=radio]").click(function() {
var value = $(this).val();
alert(value);
});
Cheers!

can also use a CSS class to define the range of radio buttons and then use the following to determine the value
$('.radio_check:checked').val()

This worked for me..
HTML:
<input type="radio" class="radioClass" name="radioName" value="1" />Test<br/>
<input type="radio" class="radioClass" name="radioName" value="2" />Practice<br/>
<input type="radio" class="radioClass" name="radioName" value="3" />Both<br/>
Jquery:
$(".radioClass").each(function() {
if($(this).is(':checked'))
alert($(this).val());
});
Hope it helps..

$('input:radio[name=theme]').bind(
'click',
function(){
$(this).val();
});

You might notice using class selector to get value of ASP.NET RadioButton controls is always empty and here is the reason.
You create RadioButton control in ASP.NET as below:
<asp:RadioButton runat="server" ID="rbSingle" GroupName="Type" CssClass="radios" Text="Single" />
<asp:RadioButton runat="server" ID="rbDouble" GroupName="Type" CssClass="radios" Text="Double" />
<asp:RadioButton runat="server" ID="rbTriple" GroupName="Type" CssClass="radios" Text="Triple" />
And ASP.NET renders following HTML for your RadioButton
<span class="radios"><input id="Content_rbSingle" type="radio" name="ctl00$Content$Type" value="rbSingle" /><label for="Content_rbSingle">Single</label></span>
<span class="radios"><input id="Content_rbDouble" type="radio" name="ctl00$Content$Type" value="rbDouble" /><label for="Content_rbDouble">Double</label></span>
<span class="radios"><input id="Content_rbTriple" type="radio" name="ctl00$Content$Type" value="rbTriple" /><label for="Content_rbTriple">Triple</label></span>
For ASP.NET we don't want to use RadioButton control name or id because they can change for any reason out of user's hand (change in container name, form name, usercontrol name, ...) as you can see in code above.
The only remaining feasible way to get the value of the RadioButton using jQuery is using css class as mentioned in this answer to a totally unrelated question as following
$('span.radios input:radio').click(function() {
var value = $(this).val();
});