Check first radio button with JQuery

Question

I would like to check the first radio button of each group. But there are some radio button that are disabled, so the script should ignore them and go to next non-disabled b

Answer 1

<input type="radio" name="r1"><br>
<input type="radio" name="r1"><br>
<hr>
<input type="radio" name="r2"><br>
<input type="radio" name="r2"><br>
<input type="radio" name="r2"><br>

<script>
$(function(){
    //removed duplicates form the following array
    $(jQuery.unique(
        //create an array with the names of the groups
        $('INPUT:radio')
            .map(function(i,e){
                return $(e).attr('name') }
            ).get()
    ))
    //interate the array (array with unique names of groups)
    .each(function(i,e){
        //make the first radio-button of each group checked
        $('INPUT:radio[name="'+e+'"]:visible:first')
            .attr('checked','checked');
    });
});
</script>

jsfiddle = http://jsfiddle.net/v4auT/

Answer 2

$("input:radio[name=groupX]:not(:disabled):first")

This should give you the first non-disabled radio-button from a group...

Answer 3

Try this :

 $("input:radio:not(:disabled)").attr("checked", true);

To check the first radio button only in a group you can

 $("parentelement input:radio:not(:disabled):first-child").attr("checked", true);

Answer 4

The below does what you want:

$(document).ready(
  function(){
    $('input:radio:first-child').attr('checked',true);
  }
  );

Demo at: JS Bin.

Answer 5

I tested the first answer and it doesn't resolve it. I had to use the following sentence:

jQuery("input:radio[name=groupName]:visible")[0].checked=true;

This check the first visible radio button with name = groupName

Answer 6

If your buttons are grouped by their name attribute, try:

$("input:radio[name=groupName][disabled=false]:first").attr('checked', true);

If they are grouped by a parent container, then:

$("#parentId input:radio[disabled=false]:first").attr('checked', true);