(sorry my poor english)

Always thank you for your efforts.

I have developed some javascript code using jquery 1.9.1.

by the way, i've got some problems.

input tag (checkbox type) manipulation doesn't works well.

<my .js code>

--------------------- bind click event.

var chkbox = $('#chkbox');

var allchk = $('#allchk');

if( allchk.val() == 0 )

{

  chkbox.attr('checked', true);

  allchk.val(1);

}

else

{

  chkbox.attr('checked', false);

  allchk.val(0);

}

--------------------( my purpose is checkbox on/off. )

as a result, that code worked only once. off (init) ----(click)----> on ----(click)----> off ----(click) ---- (no change)

but, this result disappears at jquery 1.8.3.

Please check this problems.

Thanks.