Add class by Javascript or jQuery if paragraph arabic language

I would add class when I have different language on paragraph or div like arabic language to make anther font and direction and I would make it automatic .

<div class="paragraph">
    <p>عربي لغة عربية تغير الاتجاه هنا</p>
</div>
<div class="paragraph">
    <p>example</p>
</div>

<script type="text/javascript">
    var regoo = "example|assignment";
    var re = new RegExp(regoo, 'ig');

    if($('div, p').text().match(re)) {
         $(this).addClass('gold');
    }
</script>

Solution

It could be done like this

function HasArabicCharacters(text){
    var arregex = /[\u0600-\u06FF]/;
	return arregex.test(text);
}

var textBlock = document.querySelector('#app p');
if(HasArabicCharacters(textBlock.textContent)){
	textBlock.classList.add('arabic');
}

.arabic{
	color: green;
}

<!DOCTYPE html>
<html>
<head>
  <meta charset="utf-8">
  <meta name="viewport" content="width=device-width">
  <title>Arabic test</title>
</head>
<body>
<div id="app">
	<p class="text">عربي لغة عربية تغير الاتجاه هنا</p>
</div>
</body>
</html>

HasArabicCharacters function is collected from here Regular Expression For Arabic Language