JS对象序列化为JSON对象

/**
 * JSON 解析类
 * Copyright (c) 2010 YaoYiLang 
 * @email  [e-mail]
 * @datetime 2008-04-18
 * @version 1.0
 * 
 * 方法：
 * 将JSON字符串解码为页面可识别的object对象
 * @param {String} json The JSON string
 * @return {Object} The resulting object 
 * Object o = JSONUtil.decode(json);
 * 
 * 将JS对象序列化为JSON字符串
 * @param {Mixed} o The variable to decode
 * @return {String} The JSON string
 * String json = JSONUtil.encode(o);
 */

var JSONUtil;
if (!JSONUtil) {
	JSONUtil = {};
}
JSONUtil.decode = function(json) {
	try {
		return eval("\u0028" + json + '\u0029');
	} catch (exception) {
		return eval("\u0075\u006e\u0064\u0065\u0066\u0069\u006e\u0065\u0064");
	}
};
JSONUtil.encode = (function() {
	var $ = !!{}.hasOwnProperty, _ = function($) {
		return $ < 10 ? "0" + $ : $
	}, A = {
		"\b" : "\\b",
		"\t" : "\\t",
		"\n" : "\\n",
		"\f" : "\\f",
		"\r" : "\\r",
		"\"" : "\\\"",
		"\\" : "\\\\"
	};
	return (function(C) {
		if (typeof C == "\u0075\u006e\u0064\u0065\u0066\u0069\u006e\u0065\u0064" || C === null)
			return "null";
		else if (Object.prototype.toString.call(C) === "\u005b\u006f\u0062\u006a\u0065\u0063\u0074\u0020\u0041\u0072\u0072\u0061\u0079\u005d") {
			var B = ["\u005b"], G, E, D = C.length, F;
			for (E = 0; E < D; E += 1) {
				F = C[E];
				switch (typeof F) {
					case "\u0075\u006e\u0064\u0065\u0066\u0069\u006e\u0065\u0064" :
					case "\u0066\u0075\u006e\u0063\u0074\u0069\u006f\u006e" :
					case "\u0075\u006e\u006b\u006e\u006f\u0077\u006e" :
						break;
					default :
						if (G)
							B.push("\u002c");
						B.push(F === null ? "null" : this.encode(F));
						G = true
				}
			}
			B.push("\u005d");
			return B.join("")
		} else if ((Object.prototype.toString.call(C) === "\u005b\u006f\u0062\u006a\u0065\u0063\u0074\u0020\u0044\u0061\u0074\u0065\u005d"))
			return "\"" + C.getFullYear() + "-" + _(C.getMonth() + 1) + "-" + _(C.getDate()) + "T" + _(C.getHours()) + ":" + _(C.getMinutes()) + ":" + _(C.getSeconds()) + "\"";
		else if (typeof C == "\u0073\u0074\u0072\u0069\u006e\u0067") {
			if (/["\\\x00-\x1f]/.test(C))
				return "\"" + C.replace(/([\x00-\x1f\\"])/g, function(B, _) {
					var $ = A[_];
					if ($)
						return $;
					$ = _.charCodeAt();
					return "\\u00" + Math.floor($ / 16).toString(16) + ($ % 16).toString(16)
				}) + "\"";
			return "\"" + C + "\""
		} else if (typeof C == "\u006e\u0075\u006d\u0062\u0065\u0072")
			return isFinite(C) ? String(C) : "null";
		else if (typeof C == "\u0062\u006f\u006f\u006c\u0065\u0061\u006e")
			return String(C);
		else {
			B = ["\u007b"], G, E, F;
			for (E in C)
				if (!$ || C.hasOwnProperty(E)) {
					F = C[E];
					if (F === null)
						continue;
					switch (typeof F) {
						case "\u0075\u006e\u0064\u0065\u0066\u0069\u006e\u0065\u0064" :
						case "\u0066\u0075\u006e\u0063\u0074\u0069\u006f\u006e" :
						case "\u0075\u006e\u006b\u006e\u006f\u0077\u006e" :
							break;
						default :
							if (G)
								B.push("\u002c");
							B.push(this.encode(E), "\u003a", this.encode(F));
							G = true
					}
				}
			B.push("\u007d");
			return B.join("")
		}
	})
})();
window.JSONUtil = JSONUtil;