How to check a radio button with jQuery?

Problem

I’m using jQuery to check a radio button. My code is as follows:

<form>
    <div id='type'>
        <input type='radio' id='radio_1' name='type' value='1' />
        <input type='radio' id='radio_2' name='type' value='2' />
        <input type='radio' id='radio_3' name='type' value='3' /> 
    </div>
</form>

And the JavaScript:

jQuery("#radio_1").attr('checked', true);

Doesn’t work:

jQuery("input[value='1']").attr('checked', true);

Doesn’t work:

jQuery('input:radio[name="type"]').filter('[value="1"]').attr('checked', true);

Doesn’t work:

Do you have any other suggestions? What am I overlooking?

Asked by Alexis

Solution #1

Use the following syntax for jQuery versions equal to or greater than (>=) 1.6:

$("#radio_1").prop("checked", true);

Use: for versions earlier to () 1.6.

$("#radio_1").attr('checked', 'checked');

After that, you might wish to execute click() or change() on the radio button. More information can be found in the comments.

Answered by Mike Thomsen

Solution #2

Try this.

In this case, I’m using its input name and value to target it.

$("input[name=background][value='some value']").prop("checked",true);

It’s also worth noting that apostrophes will operate in the situation of multi-word value.

Answered by Vladimir Djuricic

Solution #3

Prop() is a new function added in jQuery 1.6 that serves the same purpose.

$("#radio_1").prop("checked", true); 

Answered by Umesh Patil

Solution #4

Option that is short and easy to read:

$("#radio_1").is(":checked")

You can use it in a “if” statement because it returns true or false.

Answered by Petr Lazarev

Solution #5

Try this.

To check Radio button using Value use this.

$('input[name=type][value=2]').attr('checked', true); 

Or

$('input[name=type][value=2]').attr('checked', 'checked');

Or

$('input[name=type][value=2]').prop('checked', 'checked');

To check Radio button using ID use this.

$('#radio_1').attr('checked','checked');

Or

$('#radio_1').prop('checked','checked');

Answered by Lakshmana Kumar

Post is based on https://stackoverflow.com/questions/5665915/how-to-check-a-radio-button-with-jquery