<form id="form"method="get">First name:<input type="text"value="Jake"name="fname">Last name:<input type="text"value="Ma"name="lname"><input type="submit"value="提交"></form> 当我们使用表单 form 元素时,内部的表单元素可以根据name
是指在React中使用表单时,提交表单的事件未在功能组件内触发。 React是一个用于构建用户界面的JavaScript库,它采用组件化的开发方式。在React中,可以使用表单组件来创建表单,并通过...
submitAction, isPending]=useActionState(async(previousState, formData)=>{const error =awaitupdateName(formData.get("name"));if(error){return error;}redirect("/path");});return(<form action={submitAction}><input type="text" name="name"/><button type="submit" disabled={isPending}>更新<...
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:...
```jsxconstUncontrolledForm = () => {constinputRef = React.createRef();consthandleSubmit = (event) => {event.preventDefault();alert(inputRef.current.value);};return(<form onSubmit={handleSubmit}><input type="text"ref={inputRef}...
}, [counter])// 登录functionhandleSubmit() {// form 是 FormInstance。// getFieldsValue - 获取一组字段名对应的值,会按照对应结构返回constformData = form.getFieldsValue();// 如果显示了“验证码”却没有输入,提示if(codeVisible && !formData.captcha)returnmessage.error('请输入验证码');// 登录...
<form actinotallow={handleSubmit} /> 1. 注意,如果在 React 18 中添加<form action>属性,就会收到警告: ⚠️ Warning: Invalid value for prop action on <form> tag. Either remove it from the element or pass a string or number value to keep it in the DOM. ...
// tutorial9.jsvarCommentBox=React.createClass({render:function(){return(<divclassName="commentBox"><h1>Comments</h1><CommentListdata={this.props.data}/><CommentForm/></div>);}});ReactDOM.render(<CommentBoxdata={data}/>,document.getElementById('content')); ...
target); const query = formData.get('query'); // 使用 fetch 或其他方式发送数据 const response = await fetch('/search', /*省略*/); // ...处理响应 }; function MyForm() { return ( <form action={search}> <input name="query" /> <button type="submit">Search</button> </form> )...
get("name"); // 请求之前,先把状态更新到 optimisticLike setOptimisticName(newName); try { await updateName(newName); // 成功之后,更新最终状态 setName(newName); } catch (e) { console.error(e); } }; return ( <form action={submitAction}> <p>Your name is: {optimisticName}</p> <...