import QtQml 2.0

QtObject {
    Component.onCompleted: {
        var list = [[1, 2], [3, 4], [5, 6]];
        for (const [x, y] of list) console.log("X: " + x + "; Y: " + y)
        for (let [x, y] of list) console.log("X: " + x + "; Y: " + y)
    }
}