qt,script

qt 与 js 交互：

QFile file("./s.js");
    if (!file.open(QIODevice::ReadOnly))
    {
        qDebug() << "open error!";
        exit(0);
    }
    QTextStream in(&file);

    in.setCodec("UTF-8");
    QString str = in.readAll();
    qDebug() << qApp->applicationDirPath();
    qDebug() << str;
    file.close();

    QScriptEngine e;
    QScriptValue v = e.evaluate(str);
    if (e.hasUncaughtException())
    {
        qDebug() << "error!" << endl;
    }

    QScriptValue global = e.globalObject();

    QScriptValue obj = global.property("obj");
    qDebug() << obj.property("txt").toString();

    QScriptValue h = e.newQObject(new Holder);// Holder 为QObject,动态属性 供 脚本引擎访问
    qDebug() << "before s obj:" << h.property("str").toString();
    obj.setProperty("holder", h);


    qDebug() << h.property("str").toString();
    obj.property("run").call(obj);
    qDebug() << obj.property("txt").toString();
    qDebug() << h.property("str").toString();

var obj = Object;
obj.txt = "action1";
obj.run = function()
{
    this.txt = "chang this.txt";
    this.holder.str = "this.holder.text.toUpperCase()";
};