JSFiddle - React, Tailwind, and code Playground

HTML

<p id="demo"><br />Visit stackoverflow <br />and jsfiddle <br /></p>
<button onclick="myFunction()">Execute</button>

JavaScript

function myFunction()
{
var str = document.getElementById("demo").innerHTML; 
var res = str.replace("<br />","");
document.getElementById("demo").innerHTML=res;
}