社区团购小程序制作

// 示例代码：图片懒加载
const images = document.querySelectorAll('img[data-src]');
const observer = new IntersectionObserver((entries, observer) => {
  entries.forEach(entry => {
    if (entry.isIntersecting) {
      const img = entry.target;
      img.src = img.dataset.src;
      observer.unobserve(img);
    }
  });
});

images.forEach(img => observer.observe(img));

// 示例代码：支付接口调用
const pay = async (orderId, amount) => {
  try {
    const response = await fetch('/api/pay', {
      method: 'POST',
      headers: {
        'Content-Type': 'application/json'
      },
      body: JSON.stringify({ orderId, amount })
    });
    const result = await response.json();
    if (result.success) {
      // 支付成功处理
    } else {
      // 支付失败处理
    }
  } catch (error) {
    console.error('支付失败:', error);
  }
};

// 示例代码：HTTPS协议配置
const express = require('express');
const https = require('https');
const fs = require('fs');

const app = express();

const options = {
  key: fs.readFileSync('path/to/key.pem'),
  cert: fs.readFileSync('path/to/cert.pem')
};

https.createServer(options, app).listen(443, () => {
  console.log('HTTPS server running on port 443');
});