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jquery图片轮播代码

2026-02-04 05:54:02jquery

jquery图片轮播代码

以下是一个基于jQuery的简单图片轮播实现代码示例，包含自动轮播和手动切换功能：

HTML结构

<div class="slider">
  <div class="slider-container">
    <img src="image1.jpg" class="active">
    <img src="image2.jpg">
    <img src="image3.jpg">
  </div>
  <div class="slider-controls">
    <button class="prev">Previous</button>
    <button class="next">Next</button>
  </div>
  <div class="slider-dots">
    <span class="dot active"></span>
    <span class="dot"></span>
    <span class="dot"></span>
  </div>
</div>

CSS样式

.slider {
  position: relative;
  width: 800px;
  height: 400px;
  margin: 0 auto;
  overflow: hidden;
}

.slider-container img {
  position: absolute;
  width: 100%;
  height: 100%;
  opacity: 0;
  transition: opacity 1s ease;
}

.slider-container img.active {
  opacity: 1;
}

.slider-controls {
  position: absolute;
  width: 100%;
  display: flex;
  justify-content: space-between;
  top: 50%;
  transform: translateY(-50%);
}

.slider-dots {
  position: absolute;
  bottom: 20px;
  width: 100%;
  text-align: center;
}

.dot {
  display: inline-block;
  width: 12px;
  height: 12px;
  margin: 0 5px;
  border-radius: 50%;
  background: #ccc;
  cursor: pointer;
}

.dot.active {
  background: #333;
}

jQuery代码

$(document).ready(function() {
  let currentIndex = 0;
  const images = $('.slider-container img');
  const totalImages = images.length;
  let slideInterval;

  function showImage(index) {
    images.removeClass('active');
    $(images[index]).addClass('active');
    $('.dot').removeClass('active');
    $('.dot').eq(index).addClass('active');
    currentIndex = index;
  }

  function nextImage() {
    let nextIndex = (currentIndex + 1) % totalImages;
    showImage(nextIndex);
  }

  function startSlider() {
    slideInterval = setInterval(nextImage, 3000);
  }

  function stopSlider() {
    clearInterval(slideInterval);
  }

  $('.next').click(function() {
    stopSlider();
    nextImage();
    startSlider();
  });

  $('.prev').click(function() {
    stopSlider();
    let prevIndex = (currentIndex - 1 + totalImages) % totalImages;
    showImage(prevIndex);
    startSlider();
  });

  $('.dot').click(function() {
    stopSlider();
    let dotIndex = $(this).index();
    showImage(dotIndex);
    startSlider();
  });

  startSlider();
});