Formio UI not displaying correctly with ReactDOM

Question

I'm new to react and I'm learning to use hooks, but I can't seem to get the Formio plugin to work correctly with a component.

I'm not sure how React.DOM would be implemented with hooks, but Formio's docs state:

import React from 'react';
import ReactDOM from 'react-dom';
import {FormBuilder} from 'react-formio';

ReactDOM.render(
  <FormBuilder form={{display: 'form'}} onChange={(schema) => console.log(schema)} />
  , document.getElementById('builder')
);

I tried implementing on a component, but ReactDOM kept giving me an error. This code works, but the plugin is all wonky so I know something isn't working correctly.

import React, { useState, useEffect } from "react";
import  ReactDOM from 'react-dom'; 
import { FormBuilder } from 'react-formio';


const FormBuilderPage = props => {

    return (
        
            <FormBuilder 
               form={{ display: 'form' }}
               onChange={(schema) => console.log(schema)}
            />
            //,document.getElementById('builder')
                    
        )
        
   // This returns an error     
   return (
        
        ReactDOM.render(
            <FormBuilder form={{display: 'form'}} onChange={(schema)                => console.log(schema)} />
            , document.getElementById('builder')
          )
                    
    )
   
}

export default FormBuilderPage;

When I add ReactDOM.render I get the error:

Uncaught Error: Target container is not a DOM element.

Any advise would help!

Answer 1

So their documentation wasn't very clear, but React.DOM is not needed. There was just a css import that I had to add to the index.html file.

So this works!

import React from "react";
import { FormBuilder } from 'react-formio';


const FormBuilderPage = props => {

    return (
        
            <FormBuilder 
               form={{ display: 'form' }}
               onChange={(schema) => console.log(schema)}
            />
                    
        ) 
}

export default FormBuilderPage;

<!-- Formio CSS-->
    <link
    rel="stylesheet"
    href="https://unpkg.com/formiojs@latest/dist/formio.full.min.css"
    />