           document.getElementById('cacheRatio').textContent = stats.cacheRatio;
            document.getElementById('totalCount').textContent = stats.totalSlides;
        }

        // 退出演示
        function exitPresentation() {
            // 停止自动播放
            if (isAutoPlaying) {
                toggleAutoPlay();
            }

            // 退出全屏
            if (document.fullscreenElement) {
                document.exitFullscreen();
            }

        }

        // 键�