JSFiddle - React, Tailwind, and code Playground

JavaScript

var script = document.body.appendChild(document.createElement('script'));
script.id = 'scr';
script.text = 'function fn() {alert("A script from text.");}';
console.log(document.body.innerHTML);
fn();
document.body.removeChild(script);
console.log(document.body.innerHTML);
script = null;
fn();