JSFiddle - React, Tailwind, and code Playground

HTML

<textarea>rewrewr</textarea>
<input type="button" id="sub" value="submit" />
<div></div>

JavaScript

$('input').click(function(){
   $('div').html(brbr($('textarea').val()));
});
function brbr(str) { 
    var breakTag = '<br>';
    return (str + '').replace(/([^>\r\n]?)(\r\n|\n\r|\r|\n)/g, '$1'+ breakTag +'$2');
}