-----JS遍历对象-----
            function obj2string(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 + ":" + obj2string(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(obj2string(o[i]))
                        }
                        r = "[" + r.join() + "]";
                    }
                    return r;
                }
                return o.toString();
            }