Cannot read properties of undefined (reading 'pageSize')
时间: 2023-10-15 19:29:09 浏览: 63
This error typically occurs when you are trying to access a property of an object that is undefined. In this case, it seems like you are trying to access the 'pageSize' property of an object, but the object itself is undefined.
To fix this error, you should first check if the object exists before accessing its properties. You can do this by using conditional statements such as if or optional chaining (?.) in JavaScript.
Here's an example of how you can handle this situation using optional chaining:
```javascript
const pageSize = obj?.pageSize;
```
In this example, the 'pageSize' variable will be assigned the value of 'obj.pageSize' if 'obj' exists and has the 'pageSize' property. Otherwise, it will be assigned undefined.
Make sure to replace 'obj' with the actual object that you are working with in your code.
相关推荐
![pdf](https://img-home.csdnimg.cn/images/20210720083512.png)
![pdf](https://img-home.csdnimg.cn/images/20210720083512.png)
![](https://csdnimg.cn/download_wenku/file_type_ask_c1.png)
![](https://csdnimg.cn/download_wenku/file_type_ask_c1.png)
![](https://csdnimg.cn/download_wenku/file_type_ask_c1.png)
![](https://csdnimg.cn/download_wenku/file_type_ask_c1.png)
![](https://csdnimg.cn/download_wenku/file_type_ask_c1.png)
![](https://csdnimg.cn/download_wenku/file_type_ask_c1.png)
![](https://csdnimg.cn/download_wenku/file_type_ask_c1.png)
![](https://csdnimg.cn/download_wenku/file_type_ask_c1.png)
![](https://csdnimg.cn/download_wenku/file_type_ask_c1.png)
![](https://csdnimg.cn/download_wenku/file_type_ask_c1.png)
![](https://csdnimg.cn/download_wenku/file_type_ask_c1.png)
![](https://csdnimg.cn/download_wenku/file_type_ask_c1.png)
![](https://csdnimg.cn/download_wenku/file_type_ask_c1.png)
![](https://csdnimg.cn/download_wenku/file_type_ask_c1.png)
![](https://csdnimg.cn/download_wenku/file_type_ask_c1.png)