How to put result of JavaScript function into python variable. PyQt

Question

I want to make a function in PyQt evaluateJavaScript() (or may be similar one) and than display a result of evaluated function. Real function will be much bigger, and it might

Answer 1

In this example first I create a myWindow javascript object by passing self to the main frame, then call evaluateJavaScript when loadFinished:

#!/usr/bin/env python
#-*- coding:utf-8 -*-

from PyQt4 import QtCore, QtGui, QtWebKit  

getJsValue = """ 
w = document.getElementsByTagName('p')[0];
myWindow.showMessage(w.innerHTML);
"""  

class myWindow(QtWebKit.QWebView):  
    def __init__(self, parent=None):
        super(myWindow, self).__init__(parent)

        self.page().mainFrame().addToJavaScriptWindowObject("myWindow", self)

        self.loadFinished.connect(self.on_loadFinished)

        self.load(QtCore.QUrl('http://jquery.com'))

    @QtCore.pyqtSlot(str)  
    def showMessage(self, message):
        print "Message from website:", message

    @QtCore.pyqtSlot()
    def on_loadFinished(self):
        self.page().mainFrame().evaluateJavaScript(getJsValue) 

if __name__ == "__main__":
    import sys

    app = QtGui.QApplication(sys.argv)
    app.setApplicationName('myWindow')

    main = myWindow()
    main.show()

    sys.exit(app.exec_())