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>
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