ajax解析json 报undefined

json数据
{"data0":
{"userid":"45","path":"track1\/201906030942201559526140701\/1001-1111.MP4","date":"2019-06-20-09-42-54","track":"1"},
"data1":
{"userid":"44","path":"track3\/201906030942201559526140703\/1003-3333.MP4","date":"2019-06-19-17-02-21","track":"3"},
"data2":
{"userid":"43","path":"track1\/201906030942201559526140701\/1001-1111.MP4","date":"2019-06-19-16-59-58","track":"1"},
"data3":
{"userid":"42","path":"track3\/201906030942201559526140703\/1003-3333.MP4","date":"2019-06-19-14-45-54","track":"3"},
"data4":
{"userid":"41","path":"track3\/201906030942201559526140703\/1003-3333.MP4","date":"2019-06-19-14-45-14","track":"3"},
"data5":
{"userid":"40","path":"track3\/201906030942201559526140703\/1003-3333.MP4","date":"2019-06-19-14-09-57","track":"3"}}

mui.ajax('http://192.168.8.111:8080/vcollect/list',{
data:{
action:'0'
},
dataType:'JSON',//服务器返回json格式数据
type:'GET',//HTTP请求类型
//headers:{'Content-Type':'application/json'},
success:function(data){
console.log(data);
console.log("data0输出"+d.data0);
//console.log(data.get(data0));
},error:function(xhr,type,errorThrown){
mui.toast(errorThrown);
console.log(type);
console.log(errorThrown);
}
});

data能输出出来 data0输出就是undefined