setData:function(obj){                let that = this;                let keys = [];                let val,data;                Object.keys(obj).forEach(function(key){                    keys = key.split('.');                    val = obj[key];                    data = that.$data;                    keys.forEach(function(key2,index){                        if(index+1 == keys.length){                            that.$set(data,key2,val);                        }else{                            if(!data[key2]){                                that.$set(data,key2,{});                            }                        }                        data = data[key2];                    })                });            }