在React JS中刷新页面后如何显示提交的信息

Question

import React, { Component } from 'react';

import classes from './Form.css';

class Form extends Component {

    state = {
        firstName: '',
        phoneNo: '',
        showForm: false
    }

    displayFormHandler = (e) => {
        e.preventDefault();
        const updatedName = e.target.value;
        this.setState({
            firstName: updatedName,
        });

    }

    displayPhoneNoHandler = (e) => {
        e.preventDefault();
        const updatedPhoneNo = e.target.value;
        this.setState({ phoneNo: updatedPhoneNo });
    }

    handleFormSubmit = (e) => {
        e.preventDefault();
        this.setState({
            showForm: true
        });



    }
    render() {
        return (
            <div className={classes.Form}>
                <form onSubmit={this.handleFormSubmit}>
                    <label>Name:</label>
                    <input type="text" 
                        className={classes.inputArea}
                        name="firstName"
                        placeholder="Name"
                        onChange={this.displayFormHandler}
                        value={this.state.firstName} />
                    <label>PhoneNo:</label>
                    <input type="text"
                        className={classes.inputArea}
                        placeholder="PhoneNo"
                        name="phoneNo"
                        onChange={this.displayPhoneNoHandler}
                        value={this.state.phoneNo} />
                    <button type="submit" className={classes.Button}
                        clicked={this.handleFormSubmit}  >Submit</button>
                    <div className={classes.UserInfo}>
                        {this.state.showForm && <p>UserName: {this.state.firstName}</p>}
                        {this.state.showForm && <p>UserName: {this.state.phoneNo}</p>}


                    </div>

                </form>
            </div>

        );
    }
}

export default Form;

当前，我在React JS中创建了一个运行良好的简单表单，我想在刷新页面后显示用户信息。这样我就可以为每个用户创建按钮，以便我可以决定删除单个用户信息还是进行保存。然后我想在提交表单后清除该字段。