elementui预览图片

大图：

 <el-image v-show="isShow" ref="preview" src="" :preview-src-list="srcList" />

点击预览按钮

 <el-button @click="onPreview(scope.row)">查看附件</el-button>

js

  data() {
    return {
      isShow: false,

.......

   onPreview(row) {
      this.srcList = row.filelist.map(item => chImg(item.filepath).url)
      this.$nextTick(() => {
        this.$refs.preview.clickHandler()
      })
    }