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Stack Overflow: highlight a chosen username

Highlights occurrences of a chosen username in comments and author cards in yellow so it is easier to spot.

Code to copy

/* Highlight mentions of a chosen username in comments and posts */
(function () {
  var NAME = 'Jon Skeet';
  function highlight() {
    document.querySelectorAll('.comment-copy a, .user-details a').forEach(function (a) {
      if (a.dataset.sofHi) return;
      if (a.textContent.trim() === NAME) {
        a.dataset.sofHi = '1';
        a.style.background = '#fff3a8';
        a.style.padding = '0 3px';
        a.style.borderRadius = '3px';
      }
    });
  }
  highlight();
  new MutationObserver(highlight).observe(document.body, { childList: true, subtree: true });
})();

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