How to bind an INPUT to a value in a JSON string in Vue JS?

Question

JavaScript

Compiled a short example at jsfiddle.net/50wL7mdz/748885 the value is read but not updated because the set event on the computed property is not fired...

Answer 1

For example .
The only thing I can't understand is WHY? Why not do the opposite? - work immediately with the object, and json, if it is so necessary, let it be a computed property.