How to get value of a selected radio button?

Question

I have a <div> with radioboxes:

<div id='RB-01'> <span>Item_1</span><input type='radio' name='RB01' value='1'><br /> <span>Item_2</span><input type='radio' name='RB01' value='2'><br /> <span>Item_3</span><input type='radio' name='RB01' value='3'><br /> </div>

Then with jQuery I want to get number on an account a radiobox that was checked:

var obj; var tempId = "RB-01"; if ($('div[id=' + tempId + ']')) { $('div[id=' + tempId + '] input').each(function() { ...here I need save in the variable obj the number on an account input that was checked... }); }

@PabloFernandez: your code won't pass jslint you need to use === — qwertymk
– qwertymk, Commented Jul 29, 2011 at 13:28
@qwertymk so true. But as Brendan Eich himself said: "jslint can suck it" — Pablo Fernandez
– Pablo Fernandez, Commented Jul 29, 2011 at 14:05

tskuzzy · Accepted Answer · 2011-07-29 13:23:26Z

var obj = null; var tempId = "RB-01"; if ($('div[id=' + tempId + ']')) { obj = $('#' + tempId + ' input:checked').val(); }

There's no need to use the div[id=RB-01] selector since IDs are unique. Just use #RB-01. Then use the :checked selector to get the checked radio button.

Shef · Accepted Answer · 2011-07-29 13:30:44Z

var obj = null, tempId = "RB-01", $div = $('#'+tempId); if ($div.length){ obj = $div.find('input:radio:checked').val(); }

Here is a demo

Stuart.Sklinar · Accepted Answer · 2011-07-29 13:23:52Z

0

Sounds like you need

 $('div[id=' + tempId + '] input:checked').each(function() { var number = $(this).val(); });

You could have quite easily found this on the jQuery API site...

JQuery each!

answered Jul 29, 2011 at 13:23

Stuart.Sklinar

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2 Comments

kasdega Over a year ago

Actually he wants the radio input that is checked. So this doesn't work.

Stuart.Sklinar Over a year ago

I've edited my answer to suit - looks like I edited as as you wrote your comment!

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