我想获取另一个对象内的对象的值。 e.Model对象在“属性对象”中，并且具有car对象。 我需要价值类别：汽车对象的“EEE”
主要对象
e.Model {cid: "c770", attributes: Object, collection: s, _changing: false, _previousAttributes: Object…}
对象属性
car: Object
对象车
car: Object
abs: false
airbags: false
airconditioning: true
airportdesk: true
assistedsteering: false
automatictransmission: true
category: "EEE"
diesel: false
doors: 5
engine: null
frigorifico: false
gps: false
groupid: "WFAD"
groupname: "nombregrp"
guaranteed: false
id: "MODE000697"
imgsrc: "http://youcarrental.blob.core.windows.net/cars/Range Rover Sport_lg.gif"
isotermo: false
m3: ""
modelname: "Range Rover SPORT"
radio: false
rampa: false
spaces: "5"