How to repeatedly check input value

[mars610]

There is an example： a datebox 'A' and the other datebox 'B', i want to check datebox 'A' value is later than today and is  later than value of databox 'B'.

Code snippets：
$.extend($.fn.validatebox.defaults.rules, { 
    isAfter: { 
        validator: function(value, param){ 
           ......; 
        }, 
        message: '......' 
    } ,
    isLaterToday: { 
        validator: function(value, param){ 
           ......; 
        }, 
        message: '......' 
    }
}); 

HTML:
<input id="A" class="easyui-datebox" validType=""/>
<input id="B" class="easyui-datebox" />

[stworthy]

The JavaScript Code:

Code:

$.extend($.fn.validatebox.defaults.rules, { 
    isAfter: { 
        validator: function(value, param){ 
			var dateA = $.fn.datebox.defaults.parser(value);
			var dateB = $.fn.datebox.defaults.parser($(param[0]).datebox('getValue'));
			return dateA>new Date() && dateA>dateB;
        }, 
        message: 'The date is not later than today and B' 
    } ,
    isLaterToday: { 
        validator: function(value, param){ 
			var date = $.fn.datebox.defaults.parser(value);
			return date>new Date(); 
        }, 
        message: 'The date is not later than today' 
    }
}); 

The HTML Code:

Code:

<input id="A" class="easyui-datebox" validType="isAfter['#B']"/>
<input id="B" class="easyui-datebox" validType="isLaterToday"/>