this.$refs.scanv.focus();

在Vue中，通过this.$refs可以获取到DOM或者组件的引用。根据引用和引用的内容，如果想要给el-select组件添加焦点并打开下拉列表，可以使用this.$refs.selectRef.focus()方法。但是请注意，这个方法只有在给el-select组件添加了filterable属性后才能正常使用。所以，如果你想使用this.$refs.scanv.focus()方法，请确保你的el-select组件已经添加了filterable属性。<span class="em">1</span><span class="em">2</span><span class="em">3</span>
#### 引用[.reference_title]
- *1* *2* [this.$refs.selectRef.focus() 不生效问题解决](https://blog.csdn.net/qq_44130459/article/details/127843449)[target="_blank" data-report-click={"spm":"1018.2226.3001.9630","extra":{"utm_source":"vip_chatgpt_common_search_pc_result","utm_medium":"distribute.pc_search_result.none-task-cask-2~all~insert_cask~default-1-null.142^v93^chatsearchT3_2"}}] [.reference_item style="max-width: 50%"]
- *3* [Vue 解决通过this.$refs来获取DOM或者组件报错问题](https://download.csdn.net/download/weixin_38649315/12924679)[target="_blank" data-report-click={"spm":"1018.2226.3001.9630","extra":{"utm_source":"vip_chatgpt_common_search_pc_result","utm_medium":"distribute.pc_search_result.none-task-cask-2~all~insert_cask~default-1-null.142^v93^chatsearchT3_2"}}] [.reference_item style="max-width: 50%"]
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