The difference (in milliseconds) between the responseEnd and the startTime.
The size (in octets) of the payload body before removing any applied content encodings.
OptionalresponseA DOMHighResTimeStamp immediately after the browser receives the first byte of the response from the server.
A DOMHighResTimeStamp for the time a resource fetch started.
Resource Timing. This is a subset of the
PerformanceResourceTiminginterface. https://developer.mozilla.org/en-US/docs/Web/API/PerformanceResourceTiming