simditor-html
Add a HTML source editing button for Simditor. Use js-beautify for HTML formatting.
Usage
Reference button and dependency script on your page with Simditor:
Add html button config when you initialize Simditor:
var editor = textarea: toolbar: 'bold' 'italic' 'underline' 'color' '|' 'ol' 'ul' '|' 'html';