JSFiddle - React, Tailwind, and code Playground

by adio01

HTML

<button id="click">Highlight</button>
<iframe id="iframe" width="300px" height="300px"/>

JavaScript

$(document).ready(function() {
    $('#iframe').contents().find('body').html('<textarea class="highLight">Highlight Me</textarea>');
    
    $('#click').click(function() {
     	var iframe = $('#iframe');
        $('.highlight', iframe.contents()).select();
    });
});