Server-Sent Events (SSE)

I have been rummaging through a lot of backend-related content lately, and half the time, I don't really understand what is being said, but hey, it's an opportunity to learn. I came across this post on X: // Detect dark theme var iframe = document.getElementById('tweet-2041107243077152836-580'); if (document.body.className.includes('dark-theme')) { iframe.src = "https://platform.twitter.com/embed/Tweet.html?id=2041107243077152836&theme=dark" } From my little knowledge studying backend systems, t