如果给定时间等于或高于当前时间，则尝试更改表的颜色

<table>
  <tr>
    <td id="cell1">Cell 1</td>
    <td id="cell2">Cell 2</td>
    <td id="cell3">Cell 3</td>
  </tr>
</table>

.higher-time {
  background-color: red;
}

var givenTime = new Date("2022-01-01"); // 假设给定时间为2022年1月1日
var currentTime = new Date(); // 获取当前时间

if (givenTime >= currentTime) {
  document.getElementById("cell1").classList.add("higher-time");
  document.getElementById("cell2").classList.add("higher-time");
  document.getElementById("cell3").classList.add("higher-time");
}

const express = require("express");
const app = express();

app.get("/check-time", (req, res) => {
  const givenTime = new Date(req.query.givenTime); // 假设给定时间通过查询参数传递
  const currentTime = new Date(); // 获取当前时间

  if (givenTime >= currentTime) {
    res.send({ colorChange: true });
  } else {
    res.send({ colorChange: false });
  }
});

app.listen(3000, () => {
  console.log("Server is running on port 3000");
});