Error in v-on handler: "TypeError: Cannot read properties of undefined (reading 'setCurrentKey')"

Error in v-on handler: "TypeError: Cannot read properties of undefined (reading 'setCurrentKey')"这个错误通常是因为出现了无法读取未定义属性的情况。根据引用、和的分析，可能有以下两种情况：
1. 对象本身为空undefined，此时尝试获取属性的值会导致错误。
2. 尝试获取了不应该获取的属性，比如在一个数组上使用了对象的属性，或者在一个对象上使用了长度(length)属性。

综上所述，"TypeError: Cannot read properties of undefined (reading 'setCurrentKey')"错误很可能是因为在代码中尝试获取了一个未定义属性。你可以检查一下相关代码，确保数据对象被正确初始化，并且在获取属性值之前进行了正确的判断和处理。<span class="em">1</span><span class="em">2</span><span class="em">3</span>
#### 引用[.reference_title]
- *1* *3* [Error in v-on handler: “TypeError: Cannot read properties of undefined (reading ‘0‘)](https://blog.csdn.net/qingpingguo12/article/details/127858313)[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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