How to get default value in qml?

[TomNow99]

Hi,

I have a qml component:

In file XYZ.qml:

Item {
   x: 10
   ...
}

Now in other file I would like to set his x-value:

In file ABC.qml:

Item {
   XYZ {
      x: someCondition ? 20 : defaultValue
   }
}

In this example defaultValue is 10. How can I do this? Here of course I know that x-value is 10, so I can write:

x: someCondition ? 20 : 10

but sometimes I don't know.

[J.Hilk]

@TomNow99

Use an explicit binding, instead of a JS-Evauation

Binding { target: xyzInstance; property: "x"; value: myTextField.text; when: someCondition; restoreMode: Binding.RestoreValue}