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Thread: How to get result from javascript code run by runJavaScript in QtWebengine?

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  1. #1

    Default How to get result from javascript code run by runJavaScript in QtWebengine?

    How can I get the result from javascript run by runJavaScript in QtWebengine?

    I want to get result from the js run by runJavaScript. The result is formed after some time in js, but since js returns immediately, I can not get the mature result. How can I modify the js code or the C++ code to get the mature result? I know I can use QWebChannel to notify C++ of the mature result at appropriate time but that is a little complex. Can I delay the return time of js code so it can return with the matured result?

    C++:

    Qt Code:
    1. page()->runJavaScript(js,[this](const QVariant &v) {
    2. qDebug()<<v.toString();
    3. }
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    js:

    Qt Code:
    1. var result="immature result";
    2. function fun()
    3. {
    4. result="mature result";
    5. }
    6. setTimeout(fun,2000);
    7. result;
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  2. #2
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    Default Re: How to get result from javascript code run by runJavaScript in QtWebengine?

    Your function will only be executed asynchronously after two seconds so the only option I see is to run another script afterwards and fetch the result. Or use QWebChannel as you have already stated yourself.
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