JSFiddle - React, Tailwind, and code Playground

JavaScript

var node = document.createElement("a");
node.classList.add("tab");
node.textContent = "new tag";     

var local = localStorage.getItem("html");
if (local == null){
  localStorage.setItem("html", node.outerHTML);
  console.log('HTML setted in localStorage');
} else
    console.log(local);