GeneB-miniprogram/src/pages/18/index.ts

const _app = getApp<IAppOption>();

Page({
  data: {
    current: 0,
  },
  onLoad() {},
  handleTap1() {
    if (this.data.current <= 0) {
      wx.navigateBack();
      return;
    }
    this.setData({
      current: this.data.current - 1,
    });
  },
  handleTap2() {
    if (this.data.current >= 2) {
      wx.navigateTo({
        url: "/pages/7/index",
      });
      return;
    }
    this.setData({
      current: this.data.current + 1,
    });
  },
});

export {};