小程序循环列表删除当前选中列表的方法

<view class="inner del">
          <span class="draw" data-index="{{index}}" data-name="{{item.carNum}}" bindtap="tryDriver" >试驾</span>
          <span class="delete" data-name="{{item.carNum}}" bindtap="unBind">解绑</span>
 </view>

 //点击删除
  unBind: function(e) {
    var that = this;
    console.log(e.currentTarget.dataset.name)
    //获取列表中要删除项的下标
    wx.showModal({
      title: '提示',
      content: '是否确认解绑',
      success(res) {
        if (res.confirm) {
          //解绑
          wx.request({
            url: app.globalData.root +"car/unBind.do",
            data: {
              "openid": app.globalData.openid,
              "carNum": e.currentTarget.dataset.name
            },
            method: 'GET',
            header: {
              'Content-type': 'application/json'
            },
            success: function(res) {
              that.getCars(app.globalData.openid);
            }
          });
        }
      }
    })
  },
  //点击试驾
  tryDriver: function(e) {
    var that = this;
    var index = e.currentTarget.dataset.index;
    var list = that.data.carList;
    if (list[index].state == 5)
      return;
    wx.showModal({
      title: '提示',
      content: '是否确认试驾',
      success(res) {
        if (res.confirm) {
          //试驾
          wx.request({
            url: app.globalData.root +"car/driver.do",
            data: {
              "openid": app.globalData.openid,
              "carNum": e.currentTarget.dataset.name
            },
            method: 'GET',
            header: {
              'Content-type': 'application/json'
            },
            success: function(res) {
              if(res.data == 0){
                wx.showToast({
                  title: '车辆维修尚未结束、不可试驾',
                  icon: 'none',
                })
                return;
              }
              //切换图标
              for (var ix in list) {
                if (ix == index)
                  list[ix].state = 5;
              }
              //更新列表的状态
              that.setData({ 
                carList: list
              });
            }
          });
        }
      }
    })
  },