JSON_stringify.js

var mm = {
	type:(function () {
		var class2type = {};
		var arr = "Boolean Number String Function Array Date RegExp Object".split(" ");
		for (var n = 0; n < arr.length; n++) {
			class2type[ "[object " + arr[n] + "]" ] = arr[n].toLowerCase();
		}
		return function (obj) {
			return obj == null ?
				String(obj) :
				class2type[Object.prototype.toString.call(obj)] || "object";
		}
	})(),
	deserialize:function (str) {
		try {
			return new Function("return " + str)();
		} catch (err) {
			//throw (err);
		}
	},
	serialize:(function () {
		function formatDate(n) {
			return n < 10 ? '0' + n : n
		}
		var quote = (function () {
			var escapable = /[\\\"\x00-\x1f\x7f-\x9f\u00ad\u0600-\u0604\u070f\u17b4\u17b5\u200c-\u200f\u2028-\u202f\u2060-\u206f\ufeff\ufff0-\uffff]/g,
				meta = {
					'\b':'\\b',
					'\t':'\\t',
					'\n':'\\n',
					'\f':'\\f',
					'\r':'\\r',
					'"':'\\"',
					'\\':'\\\\'
				};
			return function (string) {
				escapable.lastIndex = 0;
				return escapable.test(string) ? '"' + string.replace(escapable, function (a) {
					var c = meta[a];
					return typeof c === 'string' ? c : '\\u' + ('0000' + a.charCodeAt(0).toString(16)).slice(-4)
				}) + '"' : '"' + string + '"'
			}
		})();
		return function (value) {
			var arr = [], strRet, type = this.type(value);
			if (type === "date") {
				if (isFinite(value.valueOf())) {
					value = value.getUTCFullYear() + '-'
						+ formatDate(value.getUTCMonth() + 1) + '-'
						+ formatDate(value.getUTCDate()) + 'T'
						+ formatDate(value.getUTCHours()) + ':'
						+ formatDate(value.getUTCMinutes()) + ':'
						+ formatDate(value.getUTCSeconds()) + 'Z';
				} else {
					value = null;
				}
			}
			type = this.type(value);
			if (type === "number") {
				strRet = isFinite(value) ? value : String(null);
			} else if (type === "boolean") {
				strRet = String(value);
			} else if (type === "string") {
				strRet = quote(value);
			} else if (type === "undefined" || type === "null") {
				strRet = 'null';
			} else if (type === "array") {
				for (var n = 0; n < value.length; n++) {
					arr.push(this.serialize(value[n]));
				}
				strRet = "[" + arr.join(",") + "]";
			} else {
				for (var i in value) {
					if (Object.prototype.hasOwnProperty.call(value, i)) {
						if (this.type(value[i]) !== "undefined") {
							arr.push(quote(i) + ":" + this.serialize(value[i]));
						}
					}
				}
				strRet = "{" + arr.join(",") + "}";
			}
			return strRet;
		}
	})()
};