vue点击图片放大，预览查看功能

这里有简单的几种查看图片的效果。

1.可以使用element ui 里面组件来使用

代码块：

    <div>
      <div>图片预览el-image</div>
      <el-image style="width: 100px; height: 100px" :src="url" :preview-src-list="srcList">                    
      </el-image>
    </div>
     data() {
        return {
          url:
            "https://fuss10.elemecdn.com/e/5d/4a731a90594a4af544c0c25941171jpeg.jpeg",
          srcList: [
            "https://fuss10.elemecdn.com/8/27/f01c15bb73e1ef3793e64e6b7bbccjpeg.jpeg",
            "https://fuss10.elemecdn.com/1/8e/aeffeb4de74e2fde4bd74fc7b4486jpeg.jpeg"
              ],
         }，

2.使用 npm install v-viewer 插件来实现也行。

首先需要安装 v-viewer npm install v-viewer

然后在 main.js 中进行导入引用。

import Viewer from 'v-viewer'
import 'viewerjs/dist/viewer.css'
Vue.use(Viewer)

使用：

<viewer>
  <img alt="a duck" src="../assets/duck.jpg">
</viewer>

3.自定义图片预览组件

首先创建imagePreview.vue组件

<template>
  <div class="custom-preview-container">
    <h3>自定义图片预览</h3>

    <!-- 图片列表 -->
    <div class="image-list">
      <div
        v-for="(image, index) in images"
        :key="index"
        class="image-item"
        @click="openPreview(index)"
      >
        <img :src="image.url" :alt="image.title" class="thumbnail" />
        <div class="image-title">{{ image.title }}</div>
      </div>
    </div>

    <!-- 预览弹窗 -->
    <div class="preview-modal" v-if="previewVisible" @click="closePreview">
      <div class="preview-content" @click.stop>
        <div class="preview-header">
          <span class="preview-title">{{ currentImage.title }}</span>
          <button class="close-btn" @click="closePreview">&times;</button>
        </div>

        <div class="preview-body">
          <button class="nav-btn prev-btn" @click="prevImage" v-if="images.length > 1">&lt;</button>
          <img :src="currentImage.url" :alt="currentImage.title" class="preview-img" />
          <button class="nav-btn next-btn" @click="nextImage" v-if="images.length > 1">&gt;</button>
        </div>

        <div class="preview-footer">
          <div class="preview-counter">{{ currentIndex + 1 }} / {{ images.length }}</div>
          <div class="preview-tools">
            <button class="tool-btn" @click="zoomIn">放大</button>
            <button class="tool-btn" @click="zoomOut">缩小</button>
            <button class="tool-btn" @click="resetZoom">重置</button>
            <button class="tool-btn" @click="rotateLeft">↺</button>
            <button class="tool-btn" @click="rotateRight">↻</button>
          </div>
        </div>
      </div>
    </div>
  </div>
</template>
  
  <script>
export default {
  name: "CustomImagePreview",
  data() {
    return {
      images: [
        {
          url:
            "https://fuss10.elemecdn.com/e/5d/4a731a90594a4af544c0c25941171jpeg.jpeg",
          title: "图片1"
        },
        {
          url:
            "https://fuss10.elemecdn.com/8/27/f01c15bb73e1ef3793e64e6b7bbccjpeg.jpeg",
          title: "图片2"
        },
        {
          url:
            "https://fuss10.elemecdn.com/e/5d/4a731a90594a4af544c0c25941171jpeg.jpeg",
          title: "图片3"
        },
        {
          url:
            "https://fuss10.elemecdn.com/8/27/f01c15bb73e1ef3793e64e6b7bbccjpeg.jpeg",
          title: "图片4"
        },
        {
          url:
            "https://fuss10.elemecdn.com/e/5d/4a731a90594a4af544c0c25941171jpeg.jpeg",
          title: "图片5"
        },
        {
          url:
            "https://fuss10.elemecdn.com/8/27/f01c15bb73e1ef3793e64e6b7bbccjpeg.jpeg",
          title: "图片6"
        }
      ],
      previewVisible: false,
      currentIndex: 0,
      scale: 1,
      rotation: 0
    };
  },
  computed: {
    currentImage() {
      return this.images[this.currentIndex] || {};
    }
  },
  methods: {
    openPreview(index) {
      this.currentIndex = index;
      this.previewVisible = true;
      this.scale = 1;
      this.rotation = 0;

      // 添加键盘事件监听
      document.addEventListener("keydown", this.handleKeyDown);

      // 阻止背景滚动
      document.body.style.overflow = "hidden";
    },
    closePreview() {
      this.previewVisible = false;

      // 移除键盘事件监听
      document.removeEventListener("keydown", this.handleKeyDown);

      // 恢复背景滚动
      document.body.style.overflow = "";
    },
    nextImage() {
      this.currentIndex = (this.currentIndex + 1) % this.images.length;
      this.resetTransform();
    },
    prevImage() {
      this.currentIndex =
        (this.currentIndex - 1 + this.images.length) % this.images.length;
      this.resetTransform();
    },
    zoomIn() {
      this.scale = Math.min(this.scale + 0.25, 3);
      this.updateTransform();
    },
    zoomOut() {
      this.scale = Math.max(this.scale - 0.25, 0.5);
      this.updateTransform();
    },
    resetZoom() {
      this.scale = 1;
      this.updateTransform();
    },
    rotateLeft() {
      this.rotation -= 90;
      this.updateTransform();
    },
    rotateRight() {
      this.rotation += 90;
      this.updateTransform();
    },
    resetTransform() {
      this.scale = 1;
      this.rotation = 0;
      this.updateTransform();
    },
    updateTransform() {
      const img = document.querySelector(".preview-img");
      if (img) {
        img.style.transform = `scale(${this.scale}) rotate(${this.rotation}deg)`;
      }
    },
    handleKeyDown(e) {
      switch (e.key) {
        case "Escape":
          this.closePreview();
          break;
        case "ArrowLeft":
          this.prevImage();
          break;
        case "ArrowRight":
          this.nextImage();
          break;
        case "+":
          this.zoomIn();
          break;
        case "-":
          this.zoomOut();
          break;
        case "r":
          this.resetTransform();
          break;
      }
    }
  },
  beforeDestroy() {
    // 确保在组件销毁时移除事件监听
    document.removeEventListener("keydown", this.handleKeyDown);
    document.body.style.overflow = "";
  }
};
</script>
  
  <style scoped>
.custom-preview-container {
  padding: 20px;
  max-width: 1200px;
  margin: 0 auto;
}

.image-list {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
  gap: 20px;
}

.image-item {
  cursor: pointer;
  border-radius: 8px;
  overflow: hidden;
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
  transition: transform 0.3s ease;
}

.image-item:hover {
  transform: translateY(-5px);
}

.thumbnail {
  width: 100%;
  height: 150px;
  object-fit: cover;
  display: block;
}

.image-title {
  padding: 10px;
  text-align: center;
  background-color: #f8f8f8;
  font-size: 14px;
}

/* 预览弹窗样式 */
.preview-modal {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background-color: rgba(0, 0, 0, 0.5);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 1000;
}

.preview-content {
  width: 90%;
  max-width: 1200px;
  height: 90%;
  background-color: #fff;
  border-radius: 8px;
  display: flex;
  flex-direction: column;
  overflow: hidden;
}

.preview-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 15px 20px;
  border-bottom: 1px solid #eee;
}

.preview-title {
  font-size: 18px;
  font-weight: 500;
}

.close-btn {
  background: none;
  border: none;
  font-size: 24px;
  cursor: pointer;
  color: #555;
}

.preview-body {
  flex: 1;
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
  overflow: hidden;
  background-color: #f5f5f5;
}

.preview-img {
  max-width: 90%;
  max-height: 90%;
  object-fit: contain;
  transition: transform 0.3s ease;
}

.nav-btn {
  position: absolute;
  top: 50%;
  transform: translateY(-50%);
  background-color: rgba(255, 255, 255, 0.7);
  border: none;
  width: 40px;
  height: 40px;
  border-radius: 50%;
  font-size: 20px;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 10;
}

.prev-btn {
  left: 20px;
}

.next-btn {
  right: 20px;
}

.preview-footer {
  padding: 15px 20px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  border-top: 1px solid #eee;
}

.preview-counter {
  font-size: 14px;
  color: #666;
}

.preview-tools {
  display: flex;
  gap: 10px;
}

.tool-btn {
  background-color: #f0f0f0;
  border: none;
  padding: 6px 12px;
  border-radius: 4px;
  cursor: pointer;
  font-size: 14px;
  transition: background-color 0.2s;
}

.tool-btn:hover {
  background-color: #e0e0e0;
}
</style>

然后进行引入使用

<div>
    <div>预览图片--手搓旋转等操作</div>
    <image-preview></image-preview>
 </div>

import imagePreview from "../components/imagePreview.vue";
export default {
  components: { imagePreview },
    
}

最终效果：截图

ok搞定，以上预览图片的几种方式都可以实现点击图片进行预览，日常记录！！！