js 禁用缓存

<meta http-equiv="Cache-Control" content="no-cache, no-store, must-revalidate" />
<meta http-equiv="Pragma" content="no-cache" />
<meta http-equiv="Expires" content="0" />

var xhr = new XMLHttpRequest();
xhr.open('GET', 'your-url', true);
xhr.setRequestHeader('Cache-Control', 'no-cache');
xhr.setRequestHeader('Pragma', 'no-cache');
xhr.send();

fetch('your-url', {
    method: 'GET',
    headers: {
        'Cache-Control': 'no-cache',
        'Pragma': 'no-cache'
    }
})
.then(response => response.json())
.then(data => console.log(data))
.catch(error => console.error('Error:', error));

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

app.get('/your-route', (req, res) => {
    res.set('Cache-Control', 'no-cache, no-store, must-revalidate');
    res.set('Pragma', 'no-cache');
    res.set('Expires', '0');
    res.send('Hello World!');
});

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