根据给定的字符串，修改一个多层嵌套对象对应的属性值

Question

题目描述我在localStorage里面储存用户信息userInfo，要封装一个修改userInfo的方法相关代码// userInfof里面有很多信息var userInfo= {    id:'123',     name:'Jim',    info:{        address:{            home:'地王大厦',            work:{               workDays:'腾讯大厦',               weekend:'阿里巴巴大厦',               festival:'百度大厦'，             },         },        money:{            balance:0,// 余额             redPacket:0,// 红包             integral:0,// 积分                     }     } }// 比如修改localStorage.userInfo.info.address.work.workDays为京东大厦，则editFn('userInfo.info.address.work.workDays','京东大厦');// 比如修改localStorage.userInfo.info.money.balance为888，则editFn('userInfo.info.money.balance','888');