The Performance interface represents timing-related performance information for the given page.

Documentation Performance by Mozilla Contributors, licensed under CC-BY-SA 2.5.



read onlynavigation:PerformanceNavigation

Is a PerformanceNavigation object representing the type of navigation that occurs in the given browsing context, like the amount of redirections needed to fetch the resource.

read onlytiming:PerformanceTiming

Is a PerformanceTiming object containing latency-related performance information.


now ():Float

Returns a DOMHighResTimeStamp representing the amount of milliseconds elapsed since a reference instant.