jQuery: Get checked checkboxes, radio buttons using Pseudo selectors

jQuery Pseudo Selectors are very efficient way to get the checked checkboxes or radio buttons.
The Pseudo Selector used is - :checked

Following are some simple examples to follow:

$("#chkBoxIdOrRadioButtId").is(":checked");

- returns a boolean true if checked or false

$("#chkBoxIdOrRadioButtId").not(":checked");

- returns a boolean true if unchecked or false

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

- programmatically check the desired.

$("input:radio[name='myRadioGrpName']:checked").val();

- return the value of the checked radio from the 'myRadioGrpName' group.

$("input[name='myChkBoxGrp']:checked").length;

- returns the count of the checked

$("input[name='myChkBoxGrp']:not(:checked)").length;

- returns the count of the unchecked