I use the Aurelia Framework for my SPA.
I have a change event in the input tag and a click event on the Continue button with their corresponding functions, as shown in the attached image.

The line in which the input and selection were placed is a template (in the form of a separate presentation and presentation model), and this template is formed on a page that has a return and continue button.
Question
Case 1:
, value.bind, "" , .
foo (change.delegate) foo2 (click.delegate)
2:
, , "" , , foo2 - .
.
"" "", .
.