JSFiddle - React, Tailwind, and code Playground

HTML

<textarea rows='5' cols='50' id='content'></textarea>
<input type='button' value='Extract Text' onclick='someFunction()'/>
<div id="output"></div>

JavaScript

function someFunction() {
    var output = document.getElementById("content").value;
    output = output.replace(/\s/g, "") 
    document.getElementById("output").innerHTML = output;
}