Quill example

quill.js

var quill = new Quill('#editor-container', {
  modules: {
    toolbar: [
      [{ header: [1, 2, 3, false] }],
      [{ 'header': 1 }, { 'header': 2 }, 'bold', 'italic', 'underline'],
      ['image', 'code-block']
    ],
    clipboard: {
      matchVisual: false
    }
  },
  formats:[
    'header','code','bold','italic','underline','image'
  ],
  placeholder: 'Compose an epic...',
  theme: 'snow'  // or 'bubble'
});

var Header = Quill.import('formats/header');
Header.tagName = ["H1", "H2", "H3"];
Quill.register(Header, true);
console.log(Quill.imports);