jquery 데이터 변화 여부 모니터링(수정판)

 
///<reference path="query-1.5.1.min.js" /> 
(function($) { 
/*            */ 
var pageDataChange = false; 
var tagName = "Input, Select, Textarea"; 
var ctrlIds = []; 
$.fn.MonitorDataChange = function(options) { 
var deafult = { 
arrTags: tagName, //      tagName   
arrCtrls: ctrlIds //      ID 
}; 
var ops = $.extend(deafult, options); 
tagName = ops.arrTags; 
ctrlIds = ops.arrCtrls; 
/*                 */ 
$(ops.arrTags).one("focus", function() { 
if ($.inArray($(this).attr("id"), ops.arrCtrls) != -1) { 
return; 
} 
$(this).data('initData', $(this).val()); 
}); 
}; 
/*            */ 
$.fn.isChange = function() { 
$(tagName).each(function() { 
if ($.inArray($(this).attr("id"), ctrlIds) != -1) { 
return; 
} 
/*      initData              value ，            */ 
if (typeof ($(this).data('initData')) != 'undefined') { 
if ($(this).data('initData') != $(this).val()) { 
pageDataChange = true; 
} 
} 
}); 
return pageDataChange; 
}; 
})(jQuery); 

 
<script type="text/javascript"> 
var is_change = false; 
$(document).ready(function() { 
$("form").MonitorDataChange(); 
}); 
function alertMsg() { 
is_change = $.fn.isChange(); 
if(is_change){ 
alert('      ！'); 
} 
} 
</script> 
<input type="text"/> 
<input type="text" /> 
<input type="text" /> 
<input type="text" /> 
<asp:TextBox runat="server"></asp:TextBox> 
<asp:CheckBox runat="server" /> 
<input type="button" value="true" onclick="alertMsg();"/>