Cannot read properties of undefined (reading 'scrollWidth')"

当出现"Cannot read properties of undefined (reading 'scrollWidth')"的错误时，通常是因为代码中尝试读取了一个未定义的属性。其中一个可能的原因是元素不存在或尚未加载。例如，在Vue项目中，当尝试获取一个DOM元素的宽度时，如果该元素不存在或尚未加载，就会出现这个错误。
要解决这个问题，你可以确保在访问DOM元素之前，先检查元素是否存在。可以使用querySelector或getElementById等方法来获取元素，然后再进行属性的操作。还可以使用Vue的生命周期钩子函数，例如mounted，在DOM元素完全加载后再操作元素的属性。这样可以确保元素已存在并可以安全地访问其属性。<span class="em">1</span><span class="em">2</span><span class="em">3</span>
#### 引用[.reference_title]
- *1* [Error in nextTick: “TypeError: Cannot read properties of undefined (reading ‘scrollTo ‘) 报错解决...](https://blog.csdn.net/m0_60585777/article/details/127239461)[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_1"}}] [.reference_item style="max-width: 50%"]
- *2* *3* [JavaScript - Cannot read property ‘scrollWidth‘ of null](https://blog.csdn.net/weixin_44198965/article/details/117064626)[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_1"}}] [.reference_item style="max-width: 50%"]
[ .reference_list ]