我有一个表格的表包含一排选择。我正在尝试显示各自选择下的选择，但是选择仅在其中一个选择下显示。我不确定这里怎么了。
我在这里有一个工作示例：
在我的代码中，当我更改任何一个选择时，选择在第一个选择下方。谁能解释一下？
I have a table who's header contains a row of selects. I am trying to display the selections under their respective selects however the selections only show under one of the selects. Im not sure whats going wrong here.
I have a working example here: https://codesandbox.io/s/table-with-multiselcts-fwhsus?file=/src/App.js
In my code the selections are updating underneath the first select when I change any one of the selects. Can anyone explain this?
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您使用了相同的Onchange回调。
问题在于此功能的参数。
字段不是字符串，它是对象。因此，在Switch语句中，仅执行默认情况。
最好分别设置Onchange回调。
You used the same onChange callback.
The problem is in the parameters of this function.
fieldis not a string, it's an object.So in the switch statement, only default case is executed.
It would be better to set onChange callback respectively.