Date support for jQuery json and jsonp calls.

jquery.json-date-support.js

// Copyright (c) 2012 Andrey Listochkin
// This code is freely distributable under the MIT license:
// http://www.opensource.org/licenses/mit-license.php
// put this file after jQuery and before any $.ajax calls
(function($) {

    if (!window.JSON) {
        $.error( "No JSON available, add json2.js to your project from https://github.com/douglascrockford/JSON-js/blob/master/json2.js" );
    }

    // fix for old browsers.
    // toISOString returns the same result in all browsers
    if (typeof Date.prototype.toISOString !== 'function') {
        Date.prototype.toISOString = Date.prototype.toJSON
    }

    // jQuery should parse dates coming from server
    $.fn.parseJSON = function( data ) {
        if ( typeof data !== "string" || !data ) {
            return null;
        }

        // Make sure leading/trailing whitespace is removed (IE can't handle it)
        data = $.trim( data );

        return window.JSON.parse( data, function (key, value) {
            var a;
            if (typeof value === 'string') {
                a = /^(\d{4})-(\d{2})-(\d{2})T(\d{2}):(\d{2}):(\d{2}(?:\.\d*)?)Z$/.exec(value);
                if (a) {
                    return new Date(Date.UTC(+a[1], +a[2] - 1, +a[3], +a[4],
                        +a[5], +a[6]));
                }
            }
            return value;
        });
    };

})(jQuery);