JSFiddle - React, Tailwind, and code Playground
HTML
<script src="http://jon-carlos.com/some/reservoir.js"></script>
<script src="http://jon-carlos.com/some/some.js"></script>
<div id="output"></div>
JavaScript
var str = Some.String("This is an example string and two of these words will be randomly uppercase.");
var newstr = str.replaceSome(/(\w+)/g, 2, function(s) { return s.toUpperCase() });
document.getElementById("output").innerHTML = newstr;