jQuery 1.9 checkbox not checked second time after once it unchecked

Question

In jQuery 1.9 v checkbox is not checked, once I have unchecked it, trying to check again by clicking on button

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

Answer 1

working fine On This JsFiddle

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

It must be a problem of event bubbling which causes to call click event twice.

Answer 2

You have to use prop, and pass it a boolean:

$("#add_cart_checkbox").prop("checked", true) ;