JSFiddle - React, Tailwind, and code Playground

by Mrityunjay Kumar

HTML

<bold-italic>
    This is Bold Italic
</bold-italic>

JavaScript

var boldItalicProto = Object.create(HTMLElement.prototype);

boldItalicProto.createdCallback = function() {
  this.innerHTML = "<b><em>"+this.innerHTML+"</em></b>";
};

var boldItalic = document.registerElement('bold-italic', {prototype: boldItalicProto});