JSFiddle - React, Tailwind, and code Playground
HTML
<form id='com' method='post'>
Mesaj:<br>
<textarea name='mesaj' id="mesaj" rows='7' col='60'></textarea><br/><br/>
<input type='submit' value='Trimite mesaj!' onclick='chat()'/>
</form>
JavaScript
$('#mesaj').keydown(function(e) {
if(e.which == 13) {
e.preventDefault();
chat();
}
});