如何让PyQt5中QWebEngineView与JavaScript交互

pip install PyQt5
pip install PyQtWebEngine

@QtCore.pyqtSlot(str)
def log(self, message):
  print(message)

@QtCore.pyqtSlot(result=str)
def getName(self):
  return "hello"

@QtCore.pyqtSlot(str, result=str)
def test(self, message):
  print(message)
  return "ok"

new QWebChannel(qt.webChannelTransport, function(channel) {
   channel.objects.pythonBridge.test("hello",function(arg) {
     console.log("Python message: " + arg);
     alert(arg);
   });
 });

from PyQt5 import QtCore

class JsBridge(QtCore.QObject):
  @QtCore.pyqtSlot(str, result=str)
  def test(self, message):
    print(message)
    return "ok"

from PyQt5 import QtCore
from PyQt5 import QtWebEngineWidgets
from PyQt5.QtCore import QDir
from PyQt5.QtWebChannel import QWebChannel
from PyQt5.QtWebEngineWidgets import QWebEngineView
from PyQt5.QtWidgets import *

class TestWindow(QMainWindow):
  def __init__(self):
    super().__init__()
    self.webView = QWebEngineView()
    self.webView.settings().setAttribute(
      QtWebEngineWidgets.QWebEngineSettings.JavascriptEnabled, True)

    channel = QWebChannel(self.webView.page())
    self.webView.page().setWebChannel(channel)
    self.python_bridge = JsBridge(None)
    channel.registerObject("pythonBridge", self.python_bridge)
    layout = QVBoxLayout()
    layout.addWidget(self.webView)
    widget = QWidget()
    widget.setLayout(layout)
    self.setCentralWidget(widget)

    self.resize(900, 600)
    self.setWindowTitle('Test')
    qr = self.frameGeometry()
    cp = QDesktopWidget().availableGeometry().center()
    qr.moveCenter(cp)
    self.move(qr.topLeft())
    self.show()
    html_path = QtCore.QUrl.fromLocalFile(QDir.currentPath() + "/assets/index.html")
    self.webView.load(html_path)

if __name__ == '__main__':
  app = QApplication(sys.argv)
  m = TestWindow()
  sys.exit(app.exec_())

  
  
  
  
  


  test