InteractionContentfulPaint: presentationTime property

Limited availability

This feature is not Baseline because it does not work in some of the most widely-used browsers.

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Experimental: This is an experimental technology
Check the Browser compatibility table carefully before using this in production.

The presentationTime read-only property of the InteractionContentfulPaint interface returns the timestamp of when the painted pixels were actually drawn on the screen.

The presentationTime is optional — some browsers may always return 0 or not expose the value at all. The value is also implementation-dependent — it may differ across browsers that choose to expose it.

Value

A DOMHighResTimeStamp or null if the value is not exposed.

Examples

This example uses a PerformanceObserver to log new interaction-contentful-paint performance entries as they are recorded in the browser's performance timeline. The buffered option is used to access entries from before the observer creation.

const observer = new PerformanceObserver((list) => {
  for (const entry of list.getEntries()) {
    console.log(
      "Interaction Contentful Paint:",
      entry.startTime,
      entry.paintTime,
    );
  }
});
observer.observe({ type: "interaction-contentful-paint", buffered: true });