javaScriptObject转String

        function obj2str(o){
            var r = [];
            if(typeof o =="string") return "\""+o.replace(/([\'\"\\])/g,"\\$1").replace(/(\n)/g,"\\n").replace(/(\r)/g,"\\r").replace(/(\t)/g,"\\t")+"\"";
                if(typeof o == "object"){
                    if(!o.sort){
                        for(var i in o)
                            r.push(i+":"+obj2str(o[i]));
                        if(!!document.all && !/^\n?function\s*toString\(\)\s*\{\n?\s*\[native code\]\n?\s*\}\n?\s*$/.test(o.toString)){
                            r.push("toString:"+o.toString.toString());
                        }
                        r="{"+r.join()+"}"
                    }else{
                        for(var i =0;i<o.length;i++)
                            r.push(obj2str(o[i]))
                        r="["+r.join()+"]"
                    }
                    return r;
                }
                return o.toString();
            }