A ListView appears to be a better match than the more complicated GridLayout and Repeater.

ListView { delegate: Item { width: ListView.view.width height: childrenRect.height Text { anchors.right: parent.horizontalCenter text: modelData.firstPart + ":" } Text { anchors.left: parent.horizontalCenter text: modelData.secondPart } } }

The JavaScript engine will indeed take ownership of the object created by Qt.createComponentObject. This is not documented specifically because in general, any object returned by a JavaScript function is normally managed by the garbage collector.

@dimitriw Glad you were able to solve the problem and thank you for sharing the solution.