让React表单使用Formik发送电子邮件

npm install formik

import { Formik, Form, Field, ErrorMessage } from 'formik';

const EmailForm = () => {
  const initialValues = {
    name: '',
    email: '',
    message: ''
  };

  const validate = values => {
    const errors = {};

    if (!values.name) {
      errors.name = '姓名不能为空';
    }

    if (!values.email) {
      errors.email = '邮箱不能为空';
    } else if (!/^[A-Z0-9._%+-]+@[A-Z0-9.-]+\.[A-Z]{2,}$/i.test(values.email)) {
      errors.email = '无效的邮箱地址';
    }

    if (!values.message) {
      errors.message = '消息不能为空';
    }

    return errors;
  };

  const handleSubmit = (values, { setSubmitting }) => {
    // 在这里编写发送电子邮件的逻辑
    console.log(values);

    // 模拟异步请求
    setTimeout(() => {
      alert('电子邮件已发送');
      setSubmitting(false);
    }, 1000);
  };

  return (
    <Formik initialValues={initialValues} validate={validate} onSubmit={handleSubmit}>
      <Form>
        <div>
          <label htmlFor="name">姓名：</label>
          <Field type="text" id="name" name="name" />
          <ErrorMessage name="name" component="div" />
        </div>

        <div>
          <label htmlFor="email">邮箱：</label>
          <Field type="email" id="email" name="email" />
          <ErrorMessage name="email" component="div" />
        </div>

        <div>
          <label htmlFor="message">消息：</label>
          <Field as="textarea" id="message" name="message" />
          <ErrorMessage name="message" component="div" />
        </div>

        <button type="submit">发送邮件</button>
      </Form>
    </Formik>
  );
};

const App = () => {
  return (
    <div>
      <h1>发送电子邮件</h1>
      <EmailForm />
    </div>
  );
};