动态引入图片路径写法

<el-image
              style="width: 16px; height: 16px"
              :src="getAssetsImg(item.unitGrade)"
              class="mr5"
            />

const getAssetsImg = (type?: string) => {
  return new URL(`/src/assets/image/fx_${type}.png`, import.meta.url).href
}