JSFiddle - React, Tailwind, and code Playground

HTML

<input id=range type=range step=0.1 min=0 max=1 value=0.6>
<br>
<output id="output">

JavaScript

var range = document.getElementById("range");
range.onchange = function () {
    document.getElementById("output").value = range.value;
}
range.onchange();