how to check the checkbox in jquery code example

Example 1: How to check whether a checkbox is checked in jQuery?

//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 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 3: jquery check checkbox

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

Example 4: jquery checkbox checked

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

Example 5: jquery in checkbox checked

// Check a checkbox
$(selector).prop('checked', true);
// Un-check a checkbox
$(selector).prop('checked', false);
// Determine if checked or not
isChecked = $(selector).prop('checked');

Example 6: how to check the checkbox in jquery

check all checkbox whit button

// Check #x
$( "#x" ).prop( "checked", true );
 
// Uncheck #x
$( "#x" ).prop( "checked", false );


example

      $('.checkAll').click(function () {
                if($(':checkbox').is(':checked')){
                    $(':checkbox').prop( "checked", false );
                }else{
                    $(':checkbox').prop( "checked", true );
                }
            })