JSFiddle - React, Tailwind, and code Playground

HTML

<b class="xyzxterms" style="cursor: default; ">bryant keil bio</b>

JavaScript

var attrs = { };

$.each($("b")[0].attributes, function(idx, attr) {
    attrs[attr.nodeName] = attr.nodeValue;
});


$("b").replaceWith(function () {
    attrs.text = $(this).text();
    return $("<h1 />", attrs);
});