js对象序列化为json字符串

网上找了找将js对象序列化为json字符串的方法。结果都不近人意，最后自己写了一个。

注意你得自己为Date增加toString()方法。

function Serialize(obj){switch(obj.constructor){case Object:var str = "{";for(var o in obj){str += o + ":" + Serialize(obj[o]) +",";}if(str.substr(str.length-1) == ",")str = str.substr(0,str.length -1);return str + "}";break;case Array:            var str = "[";for(var o in obj){str += Serialize(obj[o]) +",";}if(str.substr(str.length-1) == ",")str = str.substr(0,str.length -1);return str + "]";break;case Boolean:return "\"" + obj.toString() + "\"";break;case Date:return "\"" + obj.toString() + "\"";break;case Function:break;case Number:return "\"" + obj.toString() + "\"";break; case String:return "\"" + obj.toString().replace(/"/g,"\\\"") + "\"";break;    }
}