attr('checked', 'checked')

[anonymous]

function cball(o) {

o = $(o); var obj = o.parent().next('.cb').find(':checkbox'); if (o.find(':eq(0)').is(':checked'))

obj.attr('checked', 'checked');

else

obj.removeAttr('checked');

}

1.9 can not do this,1.8 is can do this

[anonymous]

Same with removeAttr('selected')

[gibson042]

Thanks for taking the time to contribute to the jQuery project! I suspect that you intended to use .prop("checked", <boolean>) instead of .attr/.removeAttr, but please read ​http://jquery.com/upgrade-guide/1.9/#attr-versus-prop- to confirm and test again with the ​jQuery migrate plugin.

If after doing so you still believe this to be a real issue, we'll need a complete reduced test case on jsFiddle to help us assess your ticket. To get you started, use this boilerplate: ​http://jsfiddle.net/FrKyN/ Open the link and click to "Fork" (in the top menu) to get started.

[dmethvin]

Duplicate of #13245.