Projek web menggunakan Node.js untuk melaksanakan fungsi pengundian dalam talian

{
  "name": "online-voting",
  "version": "1.0.0",
  "description": "Online voting web project",
  "main": "index.js",
  "dependencies": {
    "express": "^4.17.1"
  }
}

const express = require('express');
const app = express();
const port = 3000;

// 创建一个简单的投票选项
let options = {
  option1: 0,
  option2: 0,
  option3: 0,
};

// 设置投票路由
app.get('/vote/:option', (req, res) => {
  let option = req.params.option;

  if (options.hasOwnProperty(option)) {
    options[option]++;
    res.send('投票成功！');
  } else {
    res.status(400).send('无效的投票选项');
  }
});

// 设置获取投票结果路由
app.get('/results', (req, res) => {
  res.json(options);
});

app.listen(port, () => {
  console.log(`服务器运行在 http://localhost:${port}`);
});