JSFiddle - React, Tailwind, and code Playground

HTML

<script type="text/javascript">
    function test()    {
        alert('&lt;span&gt;blah&lt;span&gt;');
    }
</script>
<a href="#" onclick="test();">First</a><br />
<a href="#" onclick="alert('&lt;span&gt;blah&lt;span&gt;');">Second</a><br />
Third: &lt;span&gt;blah&lt;span&gt;