jquery set checked checkbox value code example
Example 1: jquery set checkbox
$('.checkboxClass').prop('checked', true);
$('.checkboxClass').attr('checked', true);
Example 2: checkbox default value and checked value get in jquery
$('#test').click(function() {
alert("Checkbox state (method 1) = " + $('#test').prop('checked'));
alert("Checkbox state (method 2) = " + $('#test').is(':checked'));
});
<script src="https://ajax.googleapis.com/ajax/libs/jquery/1.11.1/jquery.min.js"></script>
Check me: <input id="test" type="checkbox" />