是一个用于提交表单数据的按钮组件。在React中,表单通常由多个输入字段组成,用户可以在这些字段中输入数据。当用户完成输入并准备提交表单时,可以使用submit按钮来触发表单的提交操作。 该按钮通常...
submitForm 是Formik 提供的一个方法,用于手动提交表单。通常情况下,submitForm 是通过 <Formik /> 包裹的组件内部调用的。如果在 <Formik /> 外部调用 submitForm,可能会遇到以下问题: 未正确绑定:submitForm 方法未正确绑定到 Formik 实例。 上下文问题:在 React 函数组件中,可能会遇到上下文(context)问题...
[Class-component] index.jsx index.tsx import { select } from '@syncfusion/ej2-base'; import { FormValidator } from '@syncfusion/ej2-inputs'; import { UploaderComponent } from '@syncfusion/ej2-react-inputs'; import { DialogComponent } from '@syncfusion/ej2-react-popups'; import * ...
class NameForm extends React.Component { constructor(props){ super(props); this.state = {value:''}; } handleChange = (e) => { this.setState({ value: e.target.value }); //这样是错的:this.setState(() => ({value:e.target.value })); } handleSubmit = (e) => { alert('input...
For class component user, you can userefto get form instance: class Demo extends React.Component { setRef = form => { // Form instance here }; render() { return <Form ref={this.setRef} />; } } PropDescriptionType getFieldValueGet field value by name path(name:NamePath) => any ...
npm install react-hook-form Quickstart import{useForm}from'react-hook-form';functionApp(){const{register,handleSubmit,formState:{errors},}=useForm();return(<formonSubmit={handleSubmit((data)=>console.log(data))}><input{...register('firstName')}/><input{...register('lastName',{required:...
classLoginextendsComponent{// react标准表单constructor(){super()this.state={username:'',password:'',}}handleSubmit(){...}handleChange(){...}checkValid(){...}render(){return(<div><h1>登录</h1><formonSubmit={(e)=>this.handleSubmit(e)}><inputname="username"value={this.state.data.usern...
网上找到很多都 class 类型组件可以使用,在函数式组件中提示类型错误,代码是在网上复制别人的,然后自己修改了部分,让其能完美支持 class 组件和函数组件。 import { Component, ClassicComponentClass, FunctionComponent, ClassType, ComponentClass, ComponentSpec, Mixin, ReactNode, ClassicComponent, ComponentState } ...
import{Form,Input,Button}from'antd';constFormItem=Form.Item;classLoginFormextendsReact.Component{handleSubmit=e=>{e.preventDefault();this.props.form.validateFields((err,values)=>{if(!err){console.log('Received values of form: ',values);}});};render(){con...
importReact,{Component}from'react'import{FieldGroup,FieldControl,Validators}from'react-reactive-form'exportdefaultclassLoginextendsComponent{handleSubmit=(e,value)=>{console.log('Form values',value)e.preventDefault()}render(){return(<FieldGrouprender={({get,invalid,reset,value})=>(<formonSubmit={e...