check checkbox from jquery code example

Example 1: jquery set checkbox checked unchecked

//jQuery 1.6+ use
$('.checkbox').prop('checked', true);  //false for uncheck
//jQuery 1.5.x and below use
$('.checkbox').attr('checked', true);  //false for uncheck

Example 2: check checkbox by jquery

$('.myCheckbox').prop('checked', true);
$('.myCheckbox').prop('checked', false);

Example 3: check checkbox by jquery

$('.myCheckbox')[0].checked = true;
$('.myCheckbox')[0].checked = false;