checked checkbox in jquery code example

Example 1: jquery set checkbox checked

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

Example 2: Setting “checked” for a checkbox with jQuery

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

Example 3: javascript how-do-i-check-whether-a-checkbox-is-checked-in-jquery

document.getElementById('checkbox').checked;