I hate slow websites. They are annoying to use and frustrating to work on. But what does it mean to be âslowâ? It used to be waiting for document load. Then waiting for page ready. But with so many asynchronous patterns in use today, how do we even define what âslowâ is? The W3C has been working on this with the new Event Timing and Element Timing API, and has defined some new Web Vital metrics to
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