idea中Uncaught TypeError: Cannot read properties of undefined (reading 'length')
时间: 2023-10-12 16:08:19 浏览: 173
这个错误通常是由于访问undefined对象的属性导致的。在引用中提到了"Uncaught TypeError: Cannot read properties of null (reading 'add')",而在引用中提到了"Uncaught TypeError: Cannot set property __MVC_FormValidation of null"。这些错误都是因为访问了null或undefined对象的属性。具体来说,在引用中,尝试对null对象的'add'属性进行读取操作,而在引用中,尝试对null对象的'__MVC_FormValidation'属性进行设置。由于这些对象为null或undefined,因此无法读取或设置它们的属性,从而引发了该错误。要解决这个问题,你需要确保在访问对象属性之前,这些对象已经被正确地初始化和赋值。在引用中提供了一个解决方案的示例代码,其中使用了jQuery的选择器$('.course-slider')来初始化一个轮播图。在这个示例中,确保在对对象进行属性操作之前,先检查并确保这些对象不是null或undefined是很重要的。<span class="em">1</span><span class="em">2</span><span class="em">3</span>
#### 引用[.reference_title]
- *1* *3* [Uncaught TypeError: Cannot read properties of null (reading ‘add‘) 解决方案](https://blog.csdn.net/u013566212/article/details/124186875)[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%"]
- *2* [ASP.NET MVC运行出现Uncaught TypeError: Cannot set property __MVC_FormValidation of null的解决方法](https://download.csdn.net/download/weixin_38731761/13069683)[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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