JSFiddle - React, Tailwind, and code Playground

HTML

<div>This is a simple example</div>
<br>
<textarea>other method with textarea</textarea>

CSS

div {
    font-size: 2000%;
}

JavaScript

$('div, textarea').click( function () {
    getSelectionPosition (); 
});


function getSelectionPosition () {
    var selection = window.getSelection();
    console.clear();
    console.log(selection);
    console.log(selection.focusOffset);
    console.log(selection.focusNode.data[selection.focusOffset]);
    alert(selection.focusOffset);
}