<div class="image-container">
    <img ref="myImg" style="width: 100%;display: none;" src="../assets/logo.png" alt="My Image" @load="getMainColor()"/>
</div>




const myImg = ref(null); // 创建一个引用变量
    const getMainColor=()=> {
      const img = myImg.value; // 通过ref属性获取到图片元素

    
      const canvas = document.createElement('canvas'); // 创建画布对象
      const context = canvas.getContext('2d'); // 获取上下文
      
      canvas.width = img.naturalWidth || img.clientWidth; // 设置画布大小为图片原始宽度或者客户区域宽度（如果未定义）
      canvas.height = img.naturalHeight || img.clientHeight; // 设置画布高度为图片原始高度或者客户区域高度（如果未定义）
      
      context.drawImage(img, 0, 0); // 将图片绘制到画布上
      img.crossOrigin = ''//防止跨域报错不能使用，但依然会报错
      const imageData = context.getImageData(0, 0, canvas.width, canvas.height).data; // 获取图像数据
      
      let rTotal = 0;
      let gTotal = 0;
      let bTotal = 0;
      for (let i = 0; i < imageData.length; i += 4) {
        rTotal += imageData[i];
        gTotal += imageData[i + 1];
        bTotal += imageData[i + 2];
      }
      
      const totalPixels = imageData.length / 4;
      const avgR = Math.round(rTotal / totalPixels);
      const avgG = Math.round(gTotal / totalPixels);
      const avgB = Math.round(bTotal / totalPixels);
      
      console.log(`Average RGB color of the image is (${avgR}, ${avgG}, ${avgB})`);
    }