//Select all elements with an 'external-event' attribute
var extEventItems = document.querySelectorAll("[external-event]");
for (let item of extEventItems) {
//Add an onclick event to each element that triggers piano.logMicroConversion() with the
//Attribute's value as the event Id
item.onclick = (e) => {
var eventName = e.target.getAttribute("external-event");
piano.logMicroConversion(eventName, {});
};
}