Cài đặt
Việc cài đặt React Hook Form chỉ cần một lệnh duy nhất và bạn đã sẵn sàng sử dụng.
npm install react-hook-form
import { useForm, SubmitHandler } from "react-hook-form"
type Inputs = {
example: string
exampleRequired: string
}
export default function App() {
const {
register,
handleSubmit,
watch,
formState: { errors },
} = useForm<Inputs>()
const onSubmit: SubmitHandler<Inputs> = (data) => console.log(data)
console.log(watch("example")) // watch input value by passing the name of it
return (
/* "handleSubmit" will validate your inputs before invoking "onSubmit" */
<form {handleSubmit(onSubmit)}>
{/* register your input into the hook by invoking the "register" function */}
<input defaultValue="test" {...register("example")} />
{/* include validation with required or other standard HTML validation rules */}
<input {...register("exampleRequired", { required: true })} />
{/* errors will return when field validation fails */}
{errors.exampleRequired && <span>This field is required</span>}
<input type="submit" />
</form>
)
}