JSFiddle - React, Tailwind, and code Playground

JavaScript

var a = {object: 0}

function listener() {
  console.log('a')
}

$(a).on("event", listener);

$(a).trigger("event");

// -- working example

var b = {object: 1}

function listener() {
  console.log('b')
}

$(b).on("event", listener);

$(b).trigger("event");