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Element-UI中el-image中的预览功能没有单独提供api。又想使用功能。
方法一：此方法就是直接导入。node_modules中的element-ui中的image-viewer
import ElImageViewer from 'element-ui/packages/image/src/image-viewer'
因为包含es6 语法，所以ie部分可能无法兼容。
方法二 直接把image-viewer源码等相关文件copy出来
此法过于繁琐，因为牵涉到的方法还蛮多
方法三： 依然使用el-image。只不过不传src，然后使用slot error来自定义需要显示的布局。
从el-image源码可以看到，点击img触发下方方法进行预览
clickHandler() { // don't show viewer when preview is false if (!this.preview)
{ return; } // prevent body scroll prevOverflow = document.body.style.overflow;
document.body.style.overflow = 'hidden'; this.showViewer = true; },
所以只需要在你需要使用功能的地方传入preview-src-list数据手动且调用$refs.xx.clickHandler()即可。
注意：可以看到只有preview不为空时，才会触发预览，所以尽量将$refs.xx.clickHandler()放到$nextTick内
computed: { preview() { const { previewSrcList } = this; return Array.isArray(
previewSrcList) && previewSrcList.length > 0; } }
千里之行
始于足下
