let wrapperNode = document.querySelector(this._wrapElementSelector);
        let currentNode = "";
        let self = this;

        wrapperNode.addEventListener("click", function (event) {
            currentNode = event.target;

            (function eventDelegation() {
                if (!wrapperNode.isEqualNode(currentNode)) {
                    if (currentNode.classList.contains("square")) {
                        self._clickedSquare = currentNode;
                        self._handleSquareClick();
                    } else {
                        currentNode = currentNode.parentElement;
                        eventDelegation();
                    }
                }
            })();
        });