text: const banks = ['网商银行', '建设银行', '工商银行', '浦发银行'];
  
  Page({
    data: {
      bank: '',
    },
    onPickerTap() {
      my.showActionSheet({
        title: '选择发卡银行',
        items: banks,
        success: (res) => {
          this.setData({
            bank: banks[res.index],
          });
        },
      });
    },
  });
  