jQuery addClass example

Change class name on click in jQuery

HTML

<input name="checkbox" type="checkbox" id="A" />A 
<input name="checkbox" type="checkbox" id="B" />B 
<input name="checkbox" type="checkbox" id="C" />C 
<input name="checkbox" type="checkbox" id="D" />D 
&nbsp;&nbsp;&nbsp;result: <span id=result>0</span>

<script>
	$('input[name=checkbox]').click(function(){
		var a = $('#A').prop("checked");
    var b = $('#B').prop("checked");
  	var c = $('#C').prop("checked");
  	var d = $('#D').prop("checked");
    
    var result = !a&d | a&!b | a&c&!d;
  
  	$('#result').text(result ? 1 : 0);
});
</script>