checkbox checked using 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: check a checkbox jquery

$('#grepperRocks').prop('checked', true);

Example 4: check whether a checkbox is checked in jQuery

if ($('#grepperRocks').is(':checked')) {
	// this checkbox is checked
}

Example 5: how get checkbox if checked in jquery

if($("#rule").is(":checked")){
    $("#form").submit();
 }

Example 6: checkbox jquery checked

var isExpanded = $(this).attr('checked') == "checked";