add to cart event

[Coru89]

What is the best way to trigger an add to cart event using BuyButton.js?

is it like this example? DOMEvents: {
'click .button': function (event) {
myAnalyticsLibrary.track()
}

or is there a way to listen to add to cart success?

Sorry, i went through the documentation, but it's not clear to me. Thanks!