"React 19 useFormStatus/useFormState 渐进式表单与 Server Actions 协同实践"

useFormStatus/useFormState 渐进式表单与 Server Actions概述`useFormStatus` 在表单提交期间提供 `pending` 等状态；`useFormState` 提供服务端返回的结果/错误，结合 Server Actions 简化表单处理与用户反馈。表单与 Server Actions'use client' import { useFormStatus } from 'react-dom' function SubmitButton() { const { pending } = useFormStatus() return <button type="submit" disabled={pending}>{pending ? '提交中…' : '提交'}</button> } export default function Form() { return ( <form action={saveAction}> <input name="email" type="email" required /> <SubmitButton /> </form> ) } 'use server' import { z } from 'zod' import { revalidateTag } from 'next/cache' const schema = z.object({ email: z.string().email() }) export async function saveAction(formData: FormData) { const data = Object.fromEntries(formData) const parsed = schema.safeParse(data) if (!parsed.success) return { ok: false, errors: parsed.error.flatten() } await db.user.upsert(parsed.data) revalidateTag('users') return { ok: true } } useFormState 错误反馈（示意）'use client' import { useFormState } from 'react-dom' export function EnhancedForm() { const [state, action] = useFormState(saveAction, { ok: true }) return ( <form action={action}> <input name="email" type="email" /> {state?.errors && <div className="error">邮箱格式不正确</div>} <button type="submit">提交</button> </form> ) } 技术参数与验证表单交互响应性良好；错误反馈即时；标签失效与数据一致性正常。注意事项组件层级需满足 Hooks 的表单上下文；与幂等/回滚策略协同。---发布信息：已发布 · 技术验证 · 阅读 34 分钟 · CC BY-SA 4.0