DateUp.js

/*
DateUp v0.2 - JavaScript method-utility for converting date in json format to Date object
Author: Nazarov P.A. (xunter@list.ru)
Date: 2011-11-01
Example:
	var obj = {date: "2011-10-10T10:10:10.20"};
	var objWithDate = dup(obj); //objWithDate.date ~== 	new Date(2011, 10, 10, 10, 10, 10, 20)
*/
!function (window) {
    var 
		RE = /^\/Date\(([0-9-+]+)\)\/$/,
		ISO8601_RE = /^(\d{2,4})-(\d{1,2})-(\d{1,2})T(\d{1,2}):(\d{1,2}):(\d{1,2})\.(\d{1,3})(Z|([+|-](\d+)|(\d{1,2}:\d{1,2})))$/,

		useJQueryDataFilter = typeof (window.dup) !== "undefined" && typeof (window.dup.jQueryDataFilter) === "boolean" ? dup.jQueryDataFilter : typeof (jQuery) !== "undefined",

		parseDateForRE = function (text) {
		    return new Date(parseInt(text.match(RE)[1]));
		},

		parseDateForISO8601RE = function (text) {
		    var matches = text.match(ISO8601_RE);
		    if (matches === null) return text;

		    for (var i = 0; i < matches.length; i++)
		        matches[i] = parseInt(matches[i]);

		    var 
				year = matches[1],
				month = matches[2],
				day = matches[3],
				hours = matches[4],
				minutes = matches[5],
				seconds = matches[6],
				ms = matches[7];

		    return new Date(year, month - 1, day, hours, minutes, seconds, ms);
		},

		isTypeOf = function (obj, typeName) {
		    return ~Object.prototype.toString.call(obj).search(typeName);
		},

		isObject = function (obj) {
		    return isTypeOf(obj, "Object");
		},

		isArray = function (obj) {
		    return isTypeOf(obj, "Array");
		},

		dup = window.dup = function (obj, filterFunction) {
		    if (obj == null || typeof (obj) === "undefined")
		        return obj;

		    if (isObject(obj)) {
		        for (var key in obj)
		            if (obj.hasOwnProperty(key))
		                obj[key] = dup(obj[key], filterFunction);

		        return obj;
		    } else if (isArray(obj)) {
		        for (var i = 0; i < obj.length; i++)
		            obj[i] = dup(obj[i], filterFunction);

		        return obj;
		    } else if (typeof (obj) === "string")
		        if (RE.test(obj) && (!filterFunction || filterFunction(obj)))
		            return parseDateForRE(obj);
		        else if (ISO8601_RE.test(obj) && (!filterFunction || filterFunction(obj)))
		            return parseDateForISO8601RE(obj);

		    return obj;
		},

		setJQueryDataFilter = function () {
		    jQuery.ajaxSetup({
		        converters: {
		            "text json": function (jsonString) {
		                var dataAsJsonObject = jQuery.parseJSON(jsonString);
		                var dataObjectWithDates = dup(dataAsJsonObject);
		                return dataObjectWithDates;
		            }
		        }
		        /*
		        ,
		        "dataFilter": function (data, type) {
		        if (type === "json") {
		        var dataAsJsonObject = jQuery.parseJSON(data);
		        var dataObjectWithDates = dup(dataAsJsonObject);
		        return dataObjectWithDates;
		        }
		        return data;
		        }
		        */
		    });
		},

		jQueryDataFilter = dup.jQueryDataFilter = function (value) {
		    if (arguments.length) {
		        useJQueryDataFilter = value;
		        if (value && typeof (jQuery) !== "undefined")
		            setJQueryDataFilter();

		        return dup;
		    } else
		        return useJQueryDataFilter;
		};

    if (useJQueryDataFilter)
        jQueryDataFilter(true);

} (window)