jquery checkbox is checked code example

Example 1: jquery checkbox is checked

//using plane javascript 
if(document.getElementById('on_or_off_checkbox').checked) {
    //I am checked
} 

//using jQuery
if($('#on_or_off_checkbox').is(':checked')){
    //I am checked
}

Example 2: jquery check checkbox

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

Example 3: jquery checkbox checked value

if ($('#check_id').is(":checked"))
{
  // it is checked
}

Example 4: jQuery check a radio button

// jQuery version 1.6 or above use:  
$("#myRadioID").prop("checked", true);
 
//jQuery versions below 1.6 use:
$("#myRadioID").attr('checked', 'checked');

Example 5: jquery checkbox checked

$("checkbox").is(":checked")

Example 6: checkbox is checked jquery

$(your_checkbox).is(':checked');