JSFiddle - React, Tailwind, and code Playground

HTML

<script>
var surname = '\x3c\x2fscript\x3e\x3cscript\x3ealert\x28\x22All\x20your\x20base\x20are\x20belong\x20to\x20us\x22\x29\x3c\x2fscript\x3e';
</script>

JavaScript

alert("We have this surname:" + surname);