Method isChild

data/src/emulator.js:1695–1706

(first, second)

        return this.cheatMenu.style.display !== "none" || this.netplayMenu.style.display !== "none" || this.controlMenu.style.display !== "none" || this.currentPopup !== null;
    }
    isChild(first, second) {
        if (!first || !second) return false;
        const adown = first.nodeType === 9 ? first.documentElement : first;

        if (first === second) return true;

        if (adown.contains) {
            return adown.contains(second);
        }

        return first.compareDocumentPosition && first.compareDocumentPosition(second) & 16;
    }
    createBottomMenuBar() {
        this.elements.menu = this.createElement("div");