js获取request值

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

app.get('/your-route', (req, res) => {
    // 获取查询字符串参数
    const queryParam = req.query.paramName;

    // 获取路由参数
    const routeParam = req.params.paramName;

    // 获取请求体中的数据（需要中间件解析）
    app.use(express.json()); // 解析JSON格式的请求体
    const bodyParam = req.body.paramName;

    res.send(`Query Param: ${queryParam}, Route Param: ${routeParam}, Body Param: ${bodyParam}`);
});

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

// 假设URL是：http://example.com/?paramName=value
const urlParams = new URLSearchParams(window.location.search);
const paramValue = urlParams.get('paramName');
console.log(paramValue); // 输出 "value"

// 假设使用Express和EJS
app.get('/your-route', (req, res) => {
    const value = req.query.paramName;
    res.render('your-template', { value });
});

<!-- your-template.ejs -->
<p>The value is: <%= value %></p>