elementUI引用el-image-viewer组件全局方法预览大图

<el-button 
type="primary"
@click="previewBigImage(['https://img-home.csdnimg.cn/images/20201124032511.png'])">显示大图</el-button>
<!-- 预览大图 -->
<el-image-viewer 
v-if="showViewer" 
:on-close="() => { showViewer = false }" 
:url-list="srcList" 
/>

import ElImageViewer from "element-ui/packages/image/src/image-viewer";
...
components: {
    ElImageViewer,
},
...
// 预览大图
previewBigImage(srcList) {
    this.srcList = srcList;
    this.showViewer = true;
},

// 大图预览
showViewer: false,
srcList: [ ],