js判断qq是否在线源码

function checkQQOnline(qqNumber) {
    fetch('/api/check-qq-online', {
        method: 'POST',
        headers: {
            'Content-Type': 'application/json'
        },
        body: JSON.stringify({ qqNumber: qqNumber })
    })
    .then(response => response.json())
    .then(data => {
        if (data.online) {
            console.log(`${qqNumber} is online.`);
        } else {
            console.log(`${qqNumber} is offline.`);
        }
    })
    .catch(error => {
        console.error('Error:', error);
    });
}

// 使用示例
checkQQOnline('123456789');

const express = require('express');
const app = express();
const bodyParser = require('body-parser');

app.use(bodyParser.json());

// 模拟数据库查询
const qqStatus = {
    '123456789': true,
    '987654321': false
};

app.post('/api/check-qq-online', (req, res) => {
    const { qqNumber } = req.body;
    const online = qqStatus[qqNumber] || false;
    res.json({ online });
});

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