<input type="number" onKeypress="return (/[\d]/.test(String.fromCharCode(event.keyCode)))"> 如果你直接cope到你的react代码里面,第一步会报错告诉你onKeypress不存在,好吧,改成onKeyPress,不对,onKeyPress得赋个function,不能是string。那接着抽个方法 handleKeyPress(event) { return (/[\d]/.test(St...
支持该事件的 HTML 标签： <input type="text">,<select>, <textarea> 支持该事件的JavaScript 对象...
type: "post", data: file, processData: false, contentType: false, success: function(res) { if(res){ if(res.status == "OK"){ here.uploadSuccess();//上传成功之后的操作 //延迟3秒刷新列表 setTimeout(function(){ here.getTrainDataSetList(); message.success("上传成功!"); var fi...
import{useRef}from'react';constApp=()=>{constinputRef=useRef(null);functionhandleClick(){// 👇️ update input valueinputRef.current.value='New value';// 👇️ access input valueconsole.log(inputRef.current.value);}return(<div><input ref={inputRef}type="text"id="message"name="messa...
React 封装Input 需要的第三方库:react | prop-types | classnames | 等等 两个页面 Input.js | input.less Input.js import React,{Component} from 'react'; import {PropTypes} from 'prop-types'; import classNames from 'classnames'; import './input.less'...
props.setcode([...props.code.map((d, indx) => (indx === index ? element.value : d))]); //Focus next input if (element.nextSibling) { element.nextSibling.focus(); } }; javascript arrays reactjs Share Improve this questionFollowaskedMay 24, 2022 at 11:05Rahil ƏliyevRahil ...
我是React 的新手,正在尝试构建一个应用程序,我想在其中按下一个自定义按钮,该按钮将打开一个文件对话框并在选择它时上传文件。这是我的代码:class ComposeButtons extends Component{ constructor(props) { super(props); this.state={ selectedFile: null }; this.myInput = React.createRef(); } fileSelected...
Written in TypeScript and has type support Does not use any third party packages Examples Play with demoor viewexamples code Install npm install react-currency-input-field or yarn add react-currency-input-field Usage importCurrencyInputfrom'react-currency-input-field';<CurrencyInputid="input-example...
Type 'null' is not assignable to type 'HTMLInputElement' 请让我知道这里到底有什么不正确的地方,我使用了来自 Reacthttps://reactjs.org/docs/refs-and-the-dom.html的文档,但我认为我在这里做错了。以下是范围片段 class Results extends React.Component<{}, any> { ...
importInputRangefrom'react-input-range';classAppextendsReact.Component{constructor(props){super(props);this.state={value:{min:2,max:10},};}render(){return(<InputRangemaxValue={20}minValue={0}value={this.state.value}onChange={value=>this.setState({value})}/>);}}ReactDOM.render(<App/>,...