如何从html向flask发送授权头

<script>
function sendRequest() {
  var xhr = new XMLHttpRequest();
  xhr.open('GET', '/api/endpoint', true);
  xhr.setRequestHeader('Authorization', 'Bearer your_token_here');
  xhr.onreadystatechange = function() {
    if (xhr.readyState === 4 && xhr.status === 200) {
      // 处理响应数据
      var response = JSON.parse(xhr.responseText);
      console.log(response);
    }
  };
  xhr.send();
}
</script>

from flask import Flask, request

app = Flask(__name__)

@app.route('/api/endpoint', methods=['GET'])
def endpoint():
    authorization_header = request.headers.get('Authorization')
    # 处理授权头信息
    # ...

    return {'message': 'Success'}

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