JSFiddle - React, Tailwind, and code Playground

HTML

<script src="https://code.jquery.com/jquery-3.1.0.min.js"></script>
<script src="https://code.jquery.com/jquery-2.2.4.min.js"></script>
<p>
    <a href="login.php">
        <i class="fa fa-sign-in"></i> 
        Login
    </a>
</p>

JavaScript

$('p').each(function() {
    $(this).html($(this).html().replace('Login', 'Anmeldung')); 
});