check a checkbox jquery code example

Example 1: Setting “checked” for a checkbox with jQuery

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

Example 2: 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 3: jquery set checkbox

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

Example 4: jquery checkbox checked

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

Example 5: check a checkbox jquery

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

Example 6: 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');