JSFiddle - React, Tailwind, and code Playground

HTML

<p>Today is <span data-token="DateTime.DayOfWeek">$$DayOfWeek$$</span>,
</p>
<p>Tomorrow is the next day, etc, etc....</p>

JavaScript

var span = document.querySelector('[data-token]');

span.addEventListener('click', function() {
    var range = document.createRange();
    var sel = window.getSelection();
    sel.removeAllRanges();
    range.setStart(span.childNodes[0], 0);                      
    range.setEnd(span.childNodes[0], span.innerText.length);
    sel.addRange(range);                      
});