[Solved] Is it possible to have a checkbox contain a function?

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With html:

<input id="my_checkbox" type="checkbox" />
<div id="my_total">0.00</div>

and jQuery script on domReady:

$(document).ready(function(){
    $("#my_checkbox").change(function(){
        if($(this).is(':checked')) {
            $('#my_total').html('333.45');
        } else {
            $('#my_total').html('0.00');
        };
    }).trigger('change');
});

solved Is it possible to have a checkbox contain a function?