JSFiddle - React, Tailwind, and code Playground

HTML

<div id="save">Check</div>

<p>What I'm trying to accomplish is allow the user to save text that they've selected (highlighted) on the page with their cursor.</p>

JavaScript

$('#save').mousedown(function(){
   var selected_text = "";
   if (window.getSelection) {
        selected_text = window.getSelection();
   } else if (document.getSelection) {
        selected_text = document.getSelection();
   } else if (document.selection) {
        selected_text = document.selection.createRange().text; 
   }
   alert(selected_text)
});