Node.js

Check if a MIME Entity is multipart/alternative

Demonstrates the Chilkat Mime.IsMultipartAlternative method, which returns whether the Content-Type is exactly multipart/alternative. It takes no arguments.

Note: The file path is relative to the application's current working directory. Absolute paths may also be used. Supply the path to your own file.

Background: Recognizing multipart/alternative matters because its children are the same content in different formats — you display one (usually the last renderable), not all of them. That is the opposite of multipart/mixed, where every child is shown.

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Node.js

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function chilkatExample() {

    var success = false;

    //  Demonstrates the Mime.IsMultipartAlternative method, which returns whether the Content-Type is multipart/alternative.  It takes no arguments.

    var mime = new chilkat.Mime();
    success = mime.LoadMimeFile("qa_data/multipart_message.eml");
    if (success == false) {
        console.log(mime.LastErrorText);
        return;
    }

    if (mime.IsMultipartAlternative()) {
        console.log("This is a multipart/alternative entity.");
    }
    else {
        console.log("This is not multipart/alternative.");
    }


}

chilkatExample();