JSFiddle - React, Tailwind, and code Playground

HTML

<p id="do"> </p>
<input type='text' id='input'/>
<input type='button' onclick='addText()' value='Add To List'/>

JavaScript

function addText(){
    var input = document.getElementById('input').value;
    //document.getElementById('do').innerHTML = input;
    var node=document.createElement("li");
    var textnode=document.createTextNode(input);
    node.appendChild(textnode);
    document.getElementById('do').appendChild(node);
}