Get checkbox value with jQuery

Question

First I alert this, and alert 'undefined':

alert($("input[name='searchManagers']:checked").val());

But when I try this, why alert 'no':

if($("input[name='searchManagers']:checked").val() == 'undefined')
    alert('yes')
else
    alert('no')

That fix my problem:

if(typeof $("input[name='searchManagers']:checked").val() == 'undefined')
    alert('yes')
else
    alert('no')

Change it to `if(typeof $("input[name='searchManagers']:checked").val() == 'undefined')` - what happens now? — chrisfrancis27, Sep 21 '12 at 11:42
try this :) some html could help btw :) $("input[name='searchManagers']").is( ':checked' ); — OctoD, Sep 21 '12 at 11:42
Try this on: [http://stackoverflow.com/questions/426258/how-do-i-check-a-checkbox-with-jquery-or-javascript][1] [1]: http://stackoverflow.com/questions/426258/how-do-i-check-a-checkbox-with-jquery-or-javascript — Prasath Albert, Sep 21 '12 at 11:45

score 3 · Answer 1 · answered Sep 21 '12 at 11:41

3

The second one you are comparing to a string instead of the undefined type.

Try this:

if($("input[name='searchManagers']:checked").val() == undefined)

or:

if(typeof $("input[name='searchManagers']:checked").val() == 'undefined')

answered Sep 21 '12 at 11:41

Brett Zamir

Mustafa Genç · Answer 2 · 2012-09-21T11:49:39.923

2

Use:

$("input[name='searchManagers']").is(":checked")

edited Sep 21 '12 at 11:49

answered Sep 21 '12 at 11:43

Mustafa Genç

score 1 · Answer 3 · answered Sep 21 '12 at 11:42

1

Because undefined != 'undefined' If you were to modify your code

  if($("input[name='searchManagers']:checked").val() == undefined)
    alert('yes')
  else
    alert('no')

Then it should work

answered Sep 21 '12 at 11:42

DeadAlready

score 1 · Answer 4 · answered Sep 21 '12 at 11:42

1

change 'undefined' to undefined without quotes

if($("input[name='searchManagers']:checked").val() == undefined)

answered Sep 21 '12 at 11:42

Om3ga

score 0 · Answer 5 · answered Sep 21 '12 at 11:45

0

Please make sure set the id and name property in check box. And try below the code.

if(!$("input[name='searchManagers']:checked").val()){
    alert('Plase select the searchManagers');
    return false;
}

answered Sep 21 '12 at 11:45

Prathap

score 0 · Answer 6 · answered Sep 21 '12 at 11:58

0

Please make some changes and find the output.

  if ($("input[name='searchManagers']").is(':checked'))
  alert('yes');
  else
  alert('no');

answered Sep 21 '12 at 11:58

Arun Manjhi

6 Answers6