JSFiddle - React, Tailwind, and code Playground
HTML
<textarea name='awesome'>Default value</textarea>
JavaScript
$(function() {
$('textarea')[0].value = 'foobar baz';
});
setTimeout(() => alert( $('textarea').val() ), 5000);
<textarea name='awesome'>Default value</textarea>
$(function() {
$('textarea')[0].value = 'foobar baz';
});
setTimeout(() => alert( $('textarea').val() ), 5000);