How do I create search for multiple fields in dataset?

[CODE-NINJA]

XXX = name of the function. You can name it like you want.
YYY / ZZZ / myFunction / doMyFilter / start_FilteringProcess / myFunctionWithoutName as you want

But if you change it, do not forget to change on both parts …

1. BUTTON-PART

export function dropdown1_change(event) {ZZZ()}

2. CODE-PART

function ZZZ() {