import QtQuick 2.9
import QtQuick.Controls 2.2
Item {
    id: root
    width: 700
    height: 700
    RangeSlider {
        from: 0
        to: 7
        stepSize: 1
        snapMode: Slider.SnapAlways
        first.onValueChanged: console.log(first.value)
        second.onValueChanged: console.log(second.value)
    }
}