}constMyComponent= ({ handleChange }) => {const[inputValue, setInputValue] =useState('');return(
get the current model value via onChange prop import React from 'react'; import ReactDOM from 'react-dom'; import Editor from '@monaco-editor/react'; function App() { function handleEditorChange(value, event) { console.log('here is the current model value:', value); } return ( <...
React不提倡数据的双向绑定,而在用户行为下面产生的数据更新,React建议还是通过事件机制来处理。譬如下述例子中,输入框文本内容的改变,还是通过onChange事件,然后出发状态机的变化。 var LikeButton = React.createClass({ getInitialState: function() { return {liked: false}; ...
constructor(props) { super(props); this.state = { value: 1 } } onChange(e) { this.setState({ value: parseInt(e.target.value) }); } render() { return ( <Example {...this.props}> <Radio value="1" checked={this.state.value === 1} onChange={this.onChange.bind(this)}>备选项...
onChange =(e) =>{constvalue = e.target.value; startTransition(() =>{ nonUrgentAction(value); }); }; Just like that, another great hook to add to your repertoire! It's also worth noting that you can start integrating this (and the other React 18 updates) into your work as soon ...
name} onChange={(e) => { dispatch({ type: ACTIONS.UPDATE_NAME, payload: { value: e.target.value, }, }); }} /> Email Address { dispatch({ type: ACTIONS.UPDATE_EMAIL, payload: { value: e.target.value, }, }); }} /> Message <textarea rows={6} value={state.message} onChang...
onChangeType: function Default: undefined If provided, this callback function is executed whenever the change event triggers on the search box. The following arguments are passed to the onChange function: query (string) The current text value of the search box ...
onChange={this.handleOutsideClickChange} /> </React.Fragment> ); return ( <Example options={options} {...this.props} className="docs-example-frame-row"> <Button onClick={this.handleErrorOpen} text="Open file error alert" /> <Alert ...
email} onChange={handleInputChange} /> {formErrors.email} Submit ); }; export default FormWithValidation;The outcome of the code above will work like so:In this example, we introduce the formErrors state to keep track of validation errors for each input field...
constDocViewerWithInputApp=()=>{const[selectedDocs,setSelectedDocs]=useState<File[]>([]);return(<>el.target.files?.length&&setSelectedDocs(Array.from(el.target.files))}/><DocViewerdocuments={selectedDocs.map((file)=>({uri:window.URL.createObjectURL(file),fileName:file.name,}))}pluginRendere...