gistfile1.js

// Add an jQuery AJAX converter to remove fix formatting of dates returned from ASP.NET web methods.
// See http://weblogs.asp.net/bleroy/archive/2008/01/18/dates-and-json.aspx for more information.
(function () {
    var DATE_START = "/Date(";
    var DATE_START_LENGTH = DATE_START.length;

    function startsWith(str, needle) {
        return (str.substr(0, needle.length) === needle);
    }

    function isDateString(s) {
        return typeof s === "string" && startsWith(s, DATE_START);
    }

    function deserializeDateString(dateString) {
        return new Date(parseInt(dateString.substr(DATE_START_LENGTH)));
    }

    function convertJSONDates(key, value) {
        if (isDateString(value)) {
            return deserializeDateString(value);
        }
        return value;
    }

    window.jQuery.ajaxSetup({
        converters: {
            "text json": function (data) {
                return window.JSON.parse(data, convertJSONDates); // window.JSON is provided by json2.js for old browsers
            }
        }
    });
} ());