I'm not sure what you mean with "hybrid" (a C++ app which displays an webapp? distribute app code between C++/QML/javascript? ), but you can use the WebView component to display a webpage/webapp on a qml application. This should work on Ubuntu Phone also.
Take this simple application composed by: "app.qml", "app.html" and "app.js" (yeah I know, this "application" is pretty lame...). This was only tested with qmlviewer, so if you try to run it through an IDE you probably will have to modify something in regard the relative paths used.
app.qml
import QtQuick 1.0
import QtWebKit 1.0
Rectangle {
width: 800
height: 600
WebView {
url: "app.html"
anchors.fill: parent
preferredWidth: 800
preferredHeight: 600
smooth: false
settings.developerExtrasEnabled : true
settings.javascriptEnabled: true
}
}
app.html
<!doctype html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title>Hi</title>
<style>
body {
margin: 20px;
}
</style>
</head>
<body>
<a href="#" id="test_me">Click me!</a>
</body>
<script src="app.js"></script>
</html>
app.js
var x = document.getElementById("test_me");
x.onclick = function(){
console.log("Hi there");
new_elem = document.createElement("h2");
new_elem.textContent = "Hi there!";
document.getElementsByTagName("body")[0].appendChild(new_elem);
};
Hope it helps.