Using dialogs in QML

What if at some moment of time I need to get user input by calling dialog window or something like that. What is the best way to implement this using QML? Any analogs of prompt in js?

You can use Dialog, available since Qt 5.3, and customize it as you wish. Ensure, that you have this version installed and working.

Here you can find example.

Also, take a look at small example I've prepared:

import QtQuick 2.2
import QtQuick.Controls 1.1
import QtQuick.Dialogs 1.2

ApplicationWindow {
    visible: true
    width: 320
    height: 240
    title: qsTr("Custom Dialog")

    Dialog {
        id: customDialog
        title: "Custom Dialog in QML/Qt 5.3"
        standardButtons: StandardButton.Ok | StandardButton.Cancel

        Column {
            anchors.fill: parent
            Text {
                text: "Here goes all your custom elements..."
            }
            TextInput {
                id: edtInput
                text: "Input text"
            }
        }

        onButtonClicked: {
            if (clickedButton==StandardButton.Ok) {
                console.log("Accepted " + clickedButton)
                lblResults.text += edtInput.text
            } else {
                console.log("Rejected" + clickedButton)
            }
        }
    }
    Column {
        anchors.fill: parent

        Button {
            text: qsTr("Call Custom dialog")
            onClicked: customDialog.open()
        }

        Text {
            id: lblResults
            text: qsTr("Results: ")
        }
    }
}