JSFiddle - React, Tailwind, and code Playground

HTML

<script src="https://code.jquery.com/jquery-3.6.3.min.js"></script>
<textarea placeholder=""></textarea>

CSS

textarea {
  width: 300px;
  height: 100px;
}

JavaScript

var placeholder_text = `• First line
• Second line
• Third line`;

$(document).ready(function()
{
	$('textarea').attr('placeholder', placeholder_text)
});