Add Attribute to Bubble Input?

I’m building out an emoji plugin and am very new to the Bubble plugin editor. I’d like to display a normal Bubble Input element that contains an extra attribute, which in turn will display the emoji picker by referencing several javascript files that I’ve uploaded. Do we need to rebuild an input element altogether, or is there a way to import existing Bubble elements?

I guess I could add an attribute to all Bubble <inputs> on the page:

var elms = document.getElementsByClassName('bubble-element Input')
for (var i = 0; i < elms.length; i++) {
  elms[i].setAttribute("showpicker", "true");

Alternatively, if anyone has an hour or so to do some coaching - I’d be happy to compensate for your time.

Did you solved somehow the problem?
I have almost the same issue, I have to set up a new attribute on input field.