React Formik 在 Formik 之外使用submitForm

jsx
import React from "react";
import { Formik, Field, ErrorMessage } from "formik";
const initialValues = {
  username: "",
  password: ""
};
const onSubmit = (values) => {
  alert(JSON.stringify(values, null, 2));
};
const LoginForm = () => {
  let formikRef = React.createRef();
  const handleClick = () => {
    formikRef.current.submitForm();
  };
  return (
    
              initialValues={initialValues}
        onSubmit={onSubmit}
        innerRef={formikRef}
      >
        
          
            用户名：
            
            
          
          
            密码：
            
            
          
          
            提交
          
        
      
    
  );
};
export default LoginForm;