Use of map() javascript in qml

[Aishwariya]

I am trying to create a list which has a key and value (i.e key has name and value has phone number) , so when delegate is selected corresponding name and phone value will be appended in the list. So I plan to use to map() function in javascript instead of the list here. Is it possible to use that, if so, can you show me an example of it in qml?