How to check if checkbox is checked using jQuery

(GNN) - I needed to find if a checkbox was checked in jquery but I knew of multiple ways to do this. But I wasn’t sure of the best way to perform this task.

Still I haven’t decided on the best way to do this so I was hoping someone with much greater knowledge than me in the inside-outs of the jQuery could help me out here. Out of the following examples what would be the best way to discover if a checkbox has been checked or not.

Using Attribute Method

This will check to see if there is an attribute on the element which is called checked.
<b>// First way $('#checkBox').attr('checked'); </b>

Using the IS Method Selector

This method will check to see if the element is checked.
<b>// Second way $('#edit-checkbox-id').is(':checked');</b>

Checked Selector

Get all elements which are currently checked by using the following snippet.
<b>$('.selector:checked')</b>

Using @ Attribute Method

This will use a @ selector which will define a search for an attribute on the element. So the below code will search for any element with type checkbox and if it is checked. <b>// Third way for jQuery 1.2 $("input[@type=checkbox][@checked]").each( function() { // Insert code here } ); // Third way == UPDATE jQuery 1.3 $("input[type=checkbox][checked]").each( function() { // Insert code here } );</b>