JQuery 1.9.0+ input checked issue

[moonspear@…]

checkbox element want to always checked if click jquery 1.9.0 + it's not working

input type=checkbox onclick=foo(this) foo(el){

$(el).attr('checked', true) -- not working

(pre vesion 1.8.3- has been worked)

$(el).attr('checked', false) -- working

}

[timmywil]

Duplicate of #13245.