eventListenerList.js

(function() {
    Element.prototype.eventListenerList = {};

    Element.prototype._addEventListener = Element.prototype.addEventListener;
    Element.prototype.addEventListener = function(type, listener) {
        this._addEventListener(type, listener);
        if (!this.eventListenerList[this.id]) {
            this.eventListenerList[this.id] = {};
        }

        if (!this.eventListenerList[this.id][type]) {
            this.eventListenerList[this.id][type] = 0;
        }

        this.eventListenerList[this.id][type] += 1;
    };

    return (getEventListeners = target => target.eventListenerList[target.id]);
})();

const submit = document.getElementById('submit');
submit.addEventListener('click', _ => {});
submit.addEventListener('hover', _ => {});

setInterval(_ => {
    submit.addEventListener('click', _ => {});
    console.log(getEventListeners(submit));
}, 1000);