Have you ever noticed the timers constantly updating on Facebook? Whether it's an Ajax Request triggered by a timer or a client-side timer, there are numerous timers being used. Does this affect the performance of the website, and is there something crucial that I may be overlooking?
Facebook's process can be accomplished with just one timer. Whenever the timer activates, it scans through every abbr tag that has the class="timestamp" attribute and computes an update using the unique data-date attribute they have specified.
Absolutely, any addition of code that utilizes the setInterval() function can have an impact on a website's performance.
It is likely that Facebook updates its content once every minute, considering they do not display time down to the second.
Interestingly, Facebook often uses ambiguous time indications like "just then", indicating that the setInterval() function may be set to run on an even longer interval.
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