// 引入插件
const plugin = requirePlugin('tradePay');
Page({
  async onLoad() {
    const params = {
      // 仅为代码说明，具体参数参考入参表格！
      itemDetailInfo: {
        outItemId: 'zh030206',
        outSkuId: 'zh030206-1',
        price: '100.1',
      },
    };
    const res = await plugin.getDetailPageDiscountInfo(params) || {};
    const {
      success,
      resultCode, // 错误码
      resultMsg, // 错误信息
      showStatus, // 是否要展示组件
      buyRestrict, // 是否允许购买
      consultDetailInfoList = [], // 商品每个sku的优惠信息详情
    } = res;
    if (!success) {
      console.error('商详前置优惠接口失败');
    }
    ......
  }
});