How to use javascript with QScript in Qt

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I have just added Abstract in the article. --somnathbanik 17:12, 19 May 2011 (EEST)

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This article demonstrates how to use simple JavaScript with your Qt application. 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.

Article Metadata

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Article

Created: james1980 (30 Mar 2010)

Last edited: hamishwillee (11 Oct 2012)

Header File

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

Source file

#include <QApplication>
 
#include <QPushButton>
#include <QtScript>
#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';

Output