React擦除输入字段的值

Question

CodeSandbox的完整示例

(Css有点问题(

将任何内容写入输入字段或文本区域，然后单击选择将擦除输入字段&文本区域，我不确定为什么-

这似乎是因为我正在将jsx元素传递给HoverWrapper元素。

当我刚刚内联WrapInHover元素时，它的行为与预期的一样。我通过元素的方式不好吗？

向传递的元素添加键似乎并不能解决问题。。。

const Form = () => {
const selectInit = {
open: false,
initial: true,
selected: 'please select',
};
const selectReducer = (state, action) => {
switch (action.type) {
case 'toggle': {
return { ...state, open: !state.open };
}
case 'select': {
return { ...state, selected: action.selected, open: !state.open, initial: false };
}
}
};
const [selectState, selectDispatch] = useReducer(selectReducer, selectInit);
const selectHelp = selected => selectDispatch({ type: 'select', selected });
const OptionComp = ({ txt, value, onClick }) => (
<Option onClick={onClick} state={selectState} value={value}>
{selectState.open && selectState.selected === value ? null : <HoverBorder />}
{txt}
</Option>
);
const WrapInHover = ({ elements }) => {
const [hover, setHover] = useState(false);
return (
<div
css={css`
position: relative;
`}
onMouseEnter={() => {
setHover(true);
}}
onMouseLeave={() => {
setHover(false);
}}>
{elements}
<HoverBorder hover={hover} />
</div>
);
};
return (
<FormEl>
<WrapInHover elements={<Input key='ContactEmailInput' type='email' required />} />
<Label htmlFor='subject' onClick={() => selectDispatch({ type: 'toggle' })}>
Subject
</Label>
<Select>
<OptionComp
onClick={() => selectHelp('art')}
txt='I want you to paint something !'
value='art'
/>
{selectState.initial && !selectState.open ? (
<OptionComp
txt='Please Select An Option'
value='please select'
onClick={() => selectDispatch({ type: 'toggle' })}
/>
) : null}
</Select>
</FormEl>
);
};

Answer 1

将输入值和消息存储在状态中。此外，如果你的WrapInOver在主功能内，输入将失去焦点

export default function App() {
const Form = () => {
const [formState, setFormState] = useState({ email: "", message: "" });
...
const handleFormDataChange = (e, type) => {
const {target: { value }} = e;
setFormState((prevState) => ({ ...prevState, [type]: value }));
};
return (
<FormEl>
<FormTitle>Contact me</FormTitle>
<Label htmlFor="email">Email</Label>
<WrapInHover
elements={
<Input
key="ContactEmailInput"
type="email"
value={formState.email}
onChange={(e) => handleFormDataChange(e, "email")}
required
/>
}
/>
...
<Label htmlFor="message">Message</Label>
<WrapInHover
elements={
<TextArea
key="ContactMessageTextArea"
name="message"
value={formState.message}
onChange={(e) => handleFormDataChange(e, "message")}
/>
}
/>

CSB示例-我将在24小时后删除。