Name("dot"); if (n > slides.length) { slideIndex = 1 } if (n < 1) { slideIndex = slides.length } for (i = 0; i < slides.length; i++) { slides[i].style.display = "none"; } for (i = 0; i < dots.length; i++) { dots[i].className = dots[i].className.replace(" active", ""); } slides[slideIndex - 1].style.display = "block"; dots[slideIndex - 1].className += " active"; // 确保 intervalID 已定义，然后清除之前的定时器 if (typeof intervalID1 !== 'undefined') { clearInterval(intervalID1); } // 设置新的定时器 intervalID1 = setInterval(autoPlay, 5000); } // 自动播放 function autoPlay() { var i; var slides = document.getElementsByClassName("mySlides"); var dots = document.getElementsByClassName("dot"); for (i = 0; i < slides.length; i++) { slides[i].style.display = "none"; dots[i].className = dots[i].className.replace(" active", ""); } slideIndex++; if (slideIndex > slides.length) { slideIndex = 1; } slides[slideIndex - 1].style.display = "block"; dots[slideIndex - 1].className += " active"; }