webbrowser 跨域js

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

app.use((req, res, next) => {
  res.header('Access-Control-Allow-Origin', '*'); // 允许所有域，或指定特定域如 'http://example.com'
  res.header('Access-Control-Allow-Methods', 'GET, POST, PUT, DELETE, OPTIONS');
  res.header('Access-Control-Allow-Headers', 'Content-Type, Authorization');
  next();
});

app.get('/data', (req, res) => {
  res.json({ message: 'This is data from the server.' });
});

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

from flask import Flask, jsonify, request

app = Flask(__name__)

@app.route('/data')
def get_data():
    response = jsonify({'message': 'This is data from the server.'})
    response.headers.add('Access-Control-Allow-Origin', '*')
    return response

if __name__ == '__main__':
    app.run(port=3000)

fetch('http://yourserver.com/data', {
  method: 'GET',
  headers: {
    'Content-Type': 'application/json'
  }
})
.then(response => response.json())
.then(data => console.log(data))
.catch(error => console.error('Error:', error));