jQuery check if an input is type checkbox?

Question

I'd like to find out if an input is a checkbox or not, and the following doesn't work:

$("#myinput").attr('checked') === undefined

Thank you once again!

Answer 1

$("#myinput").attr('type') == 'checkbox'

Answer 2

>>> a=$("#communitymode")[0]
<input id="communitymode" type="checkbox" name="communitymode">
>>> a.type
"checkbox"

Or, more of the style of jQuery:

$("#myinput").attr('type') == 'checkbox'

Answer 3

You can use the pseudo-selector :checkbox with a call to jQuery's is function:

$('#myinput').is(':checkbox')

Answer 4

Use this function:

function is_checkbox(selector) {
    var $result = $(selector);
    return $result[0] && $result[0].type === 'checkbox';
};

Or this jquery plugin:

$.fn.is_checkbox = function () { return this.is(':checkbox'); };