perform an action on checkbox checked or unchecked event on html form

Question

I have a checkbox on a form which is unchecked by default as usual. now I want to perform two separated actions on checked and unchecked state of this checkbox.

this

Answer 1

    syn

js:

$('#g01-01').on('change',function(){
    var _val = $(this).is(':checked') ? 'checked' : 'unchecked';
    alert(_val);
});