antd key报错 Each child in a list should have a unique “key“ prop.

本文转载自查看原文 2020-10-19 16:37 3822

转： https://blog.csdn.net/AS_TS/article/details/107981367

使用 react + antd 组件时，有时会报出 Each child in a list should have a unique "key" prop. 这样的错误

这里列举几个相关的次错误报错和解决方式

1、Table 表格
　　官方给 Table 组件提供了一个 rowKey 属性，用于给表格的每一行设定一个 key 值
　　如：<Table columns={columns} dataSource={users.data} rowKey={columns => columns.id} />
2、Select 选择器中的 Option
　　使用 map() 方法动态添加选项，也需要给 <Option> 设置 key 属性
3、使用 map() 遍历渲染时，也会报出 key 值的错误
　　给被遍历的组件加上 key 属性
4、Modal 对话框
　　给页脚组件设置 key 属性

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