在React中,可以通过props将表单数据从父组件传递到子组件。以下是一种常见的方法:
class ParentComponent extends React.Component {
constructor(props) {
super(props);
this.state = {
formData: {
name: '',
email: ''
}
};
}
render() {
return (
<div>
<ChildComponent formData={this.state.formData} />
</div>
);
}
}
class ParentComponent extends React.Component {
// ...
handleFormChange = (event) => {
const { name, value } = event.target;
this.setState(prevState => ({
formData: {
...prevState.formData,
[name]: value
}
}));
}
render() {
return (
<div>
<ChildComponent formData={this.state.formData} onFormChange={this.handleFormChange} />
</div>
);
}
}
class ChildComponent extends React.Component {
render() {
const { formData, onFormChange } = this.props;
return (
<form>
<input type="text" name="name" value={formData.name} onChange={onFormChange} />
<input type="email" name="email" value={formData.email} onChange={onFormChange} />
</form>
);
}
}
通过以上步骤,表单数据将从父组件传递到子组件,并且子组件可以通过props获取和更新表单数据。
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