How to use javascript with QScript in Qt

Template:Abstract The program in this article will create a button and the text of the button to display is set by the JavaScript file and again button will be shown by Qt application.

Header File

No header file is used in this example. Complete code is written in the single file.

Source file

1. include <QApplication>

1. include <QPushButton>
2. include <QtScript>
3. include <QLabel>

int main(int argc, char *argv[]) {

   Q_INIT_RESOURCE(hello);
   QApplication app(argc, argv);
   QScriptEngine engine;
   QPushButton button;

   QScriptValue scriptButton = engine.newQObject(&button);
   engine.globalObject().setProperty("button", scriptButton);

   QString fileName(":/hello.js");
   QFile scriptFile(fileName);
   scriptFile.open(QIODevice::ReadOnly);
   QTextStream stream(&scriptFile);
   QString contents = stream.readAll();
   scriptFile.close();
   QScriptValue result = engine.evaluate(contents, fileName);
   
   button.show();
   return app.exec();

}

Script file

button.text = 'jajal mehul!'; button.styleSheet = 'color:red;font-style: italic';