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              <div class="app">


              body {
  background: #f3f1f2;

.app {
  margin: 1rem auto;
  max-width: 40rem;

.app .ql-container {
  min-height: 10em;
  border-bottom-left-radius: 0.5em;
  border-bottom-right-radius: 0.5em;
  background: #fefcfc;

.app .ql-toolbar {
  background: #eaecec;
  border-top-left-radius: 0.5em;
  border-top-right-radius: 0.5em;
  border-bottom: none;


 * Custom "star" icon for the toolbar using an Octicon
const CustomButton = () => <span className="octicon octicon-star" />;

 * Event handler to be attached using Quill toolbar module (see line 73)
function insertStar() {
  const cursorPosition = this.quill.getSelection().index;
  this.quill.insertText(cursorPosition, "★");
  this.quill.setSelection(cursorPosition + 1);

 * Custom toolbar component including insertStar button and dropdowns
const CustomToolbar = () => (
  <div id="toolbar">
    <select className="ql-header" defaultValue={""} onChange={e => e.persist()}>
      <option value="1" />
      <option value="2" />
      <option selected />
    <button className="ql-bold" />
    <button className="ql-italic" />
    <select className="ql-color">
      <option value="red" />
      <option value="green" />
      <option value="blue" />
      <option value="orange" />
      <option value="violet" />
      <option value="#d0d1d2" />
      <option selected />
    <button className="ql-insertStar">
      <CustomButton />

 * Editor component with custom toolbar and content containers
class Editor extends React.Component {
  constructor(props) {
    this.state = { editorHtml: "" };
    this.handleChange = this.handleChange.bind(this);

  handleChange(html) {
    this.setState({ editorHtml: html });

  render() {
    return (
      <div className="text-editor">
        <CustomToolbar />
          theme={"snow"} // pass false to use minimal theme

 * Quill modules to attach to editor
 * See for complete options
Editor.modules = {
  toolbar: {
    container: "#toolbar",
    handlers: {
      insertStar: insertStar
  clipboard: {
    matchVisual: false,

 * Quill editor formats
 * See
Editor.formats = [

 * PropType validation
Editor.propTypes = {
  placeholder: PropTypes.string

 * Render component on page
  <Editor placeholder={"Write something or insert a star ★"} />,