Strip HTML Tags From Text [JavaScript]

<textarea id="text" rows="5" cols="50">
<b>At</b> <a href="https://www.w3schools.com">w3schools.com</a> you'll learn how to make a <sup>website</sup>. 5 < 6!
</textarea>

<script>
    // https://stackoverflow.com/questions/822452/strip-html-from-text-javascript
    function stripHTMLTags(html){
        var tmp = document.createElement("div");
        tmp.innerHTML = html;
        return tmp.textContent || tmp.innerText || "";
    }
    var textElement = document.getElementById('text');
    var textValue = textElement.value;
    var strippedTextValue = stripHTMLTags(textValue);
    alert(strippedTextValue);
</script>