JSFiddle - React, Tailwind, and code Playground

JavaScript

var test = "<b>there is no spoon</b>";

// good
var insert = document.createElement("div");
insert.appendChild(document.createTextNode(test));

// bad
var insert2 = document.createElement("div");
insert2.innerHTML = test;

document.body.appendChild(insert);
document.body.appendChild(insert2);