JSFiddle - React, Tailwind, and code Playground
HTML
<p>This is text in HTML.</p>
<p id="message1"></p>
<p id="message2"></p>
JavaScript 1.7
console.log('This will be output in the browser console2.');
var elem1 = document.querySelector('#message1');
var elem2 = document.querySelector('#message2');
elem1.innerHTML = 'This is the message from <b>JavaScript</b>.';
elem2.textContent = 'This is the message from <b>JavaScript</b>.';
elem1.style.backgroundColor = 'red';