基于jquery的监控数据是否发生改变

///<reference path="Jquery-1.3.2-vsdoc2.js" />
(function($) {
var pageDataChange = false //默认标识页面数据未发生改变

$.fn.MonitorDataChange = function(options) {
var tagName = new Array('Input', 'Select', 'Textarea');
var ctrlIds = [];

var deafult = {
arrTags: tagName, //需监控控件的tagName属性数组
arrCtrls: ctrlIds //不监控的控件ID
};
var ops = $.extend(deafult, options);

for (var i = 0; i < ops.arrTags.length; i++) {
$(ops.arrTags[i]).each(function() {
if (ops.arrCtrls.length == 0) {
$(this).bind('change', function() {
pageDataChange = true;
});
}
else {
var flag = false;
for (var j = 0; j < ops.arrCtrls.length; j++) {
if ($(this).attr('id') == ops.arrCtrls[j]) {
flag = true;
break;
}
}
if (!flag) {
$(this).bind('change', function() {
pageDataChange = true;
});
}
}
});
}
return this;
};

$.fn.getValue = function() {
return pageDataChange;
};
})(jQuery);