Is it possible to overwrite a button output?

Question

For example, if I have this basic button

Button["Sum", Print[2 + 2]]

is it possible to overwrite the same output without creating a new one and have a single 4 printed out?

You can use Dynamic or NotebookWrite, depends on the context. — Kuba, May 27 '19 at 13:23
Possible duplicate of How to create a notebook element that can replace itself? — Edmund, Jun 26 '19 at 21:51

score 2 · Answer 1 · answered May 27 '19 at 19:41

2

You can assign the result to a variable and access the variable dynamically, like:

Button["Sum 2+2", x = 2 + 2]
Button["Sum 2+5", x = 2 + 5]
Dynamic@x

Output:

x

(press first button)

4

(press second button)

7

answered May 27 '19 at 19:41

Theo Tiger

1 Answers1