How can I stripe the HTML <b> tag and replace it with <h>?

Question

<div id="sentence">
{{front}}
</div>

<script>
s = document.querySelector('#sentence');
s.innerHTML = s.innerHTML.replace(/.*<b>(.*)<\/b>.*/, '<p>');
</script>

Answer 1

s = document.querySelector('#sentence');
s.innerHTML = s.innerHTML.replace(/<b>/g, '<h>');
s.innerHTML = s.innerHTML.replace(/<\/b>/g, '</h>');