JSFiddle - React, Tailwind, and code Playground
by kakss
HTML
<textarea class="textAreaMultiline" placeholder="Hello, \nThis is multiline example \n\nHave Fun" rows="5" cols="35"></textarea>
JavaScript
var textAreas = document.getElementsByTagName('textarea');
Array.prototype.forEach.call(textAreas, function(elem) {
elem.placeholder = elem.placeholder.replace(/\\n/g, '\n');
});