问题，关于老师说的使用switch

问题描述：

请老师帮我检查一下，为什么我改用 switch 显示不出数据，传的值也都能打印出来，可是最后的结果还是空的

相关截图：

相关代码：

​// pages/hot/hot.js
Page({
  data: {
    rankType: undefined,
    rankTitle: [{
        name: '实战排行',
        type: 'project'
      },
      {
        name: '路径排行',
        type: 'path'
      }
    ],
    timeType: undefined,
    timeTitle: [{
        date: '周',
        type: 'week'
      },
      {
        date: '月',
        type: 'month'
      }
    ],
    rankListData: []
  },
  rankList: {},
  onLoad() {
    wx.request({
      url: 'https://www.fastmock.site/mock/55f026f87038d1b3db021a9276d04bb7/longzilei/api/rank',
      success: (res) => {
        // console.log(res)
        const {
          data: {
            data
          }
        } = res
        this.rankList = data
        const rankType = wx.getStorageSync('rankType') || 'project'
        const timeType = wx.getStorageSync('timeType') || 'week'
        this.setData({
          rankType,
          timeType
        })
        this.rankDataChange(rankType, timeType)
      }
    })
  },
  rankDataChange(rankType, timeType) {
    let list = []
    console.log(rankType, timeType)
    switch (rankType, timeType) {
      case (rankType === 'project' && timeType === 'week'):
        list = this.rankList.projectWeek
        console.log(list)
        break;
      case (rankType === 'project' && timeType === 'month'):
        list = this.rankList.projectMonth
        break
      case (rankType === 'path' && timeType === 'week'):
        list = this.rankList.pathWeek
        break
      case (rankType === 'path' && timeType === 'month'):
        list = this.rankList.pathMonth
        break
    }

    // if (rankType === 'project' && timeType === 'week') {
    //   list = this.rankList.projectWeek
    // } else if (rankType === 'project' && timeType === 'month') {
    //   list = this.rankList.projectMonth
    // } else if (rankType === 'path' && timeType === 'week') {
    //   list = this.rankList.pathWeek
    // } else {
    //   list = this.rankList.pathMonth
    // }

    console.log(list)
    this.setData({
      rankListData: list
    })
  },
  rankChange(e) {
    // console.log(e)
    const rankType = e.currentTarget.dataset.rank
    const {
      timeType
    } = this.data
    // console.log(rankType)
    this.setData({
      rankType
    })
    wx.setStorage({
      data: rankType,
      key: 'rankType'
    })
    this.rankDataChange(rankType, timeType)
  },
  timeChange(e) {
    const {
      rankType
    } = this.data
    const timeType = e.currentTarget.dataset.time
    this.setData({
      timeType
    })
    wx.setStorage({
      data: timeType,
      key: 'timeType'
    })
    this.rankDataChange(rankType, timeType)
  }
})