Window.performance

The Web Performance API allows web pages access to certain functions for measuring the performance of web pages and web applications, including the Navigation Timing API and high-resolution time data.

Methods

performance.mark()
Maps a DOMHighResTimeStamp to a specified name representing the amount of milliseconds elapsed since a reference instant.
performance.now()
Returns a DOMHighResTimeStamp representing the amount of milliseconds elapsed since a reference instant.

Properties

performance.timing
Is a PerformanceTiming object containing latency-related performance information.
performance.navigation
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.
performance.memory
A non-standard extension added in Chrome.

License

© 2016 Mozilla Contributors
Licensed under the Creative Commons Attribution-ShareAlike License v2.5 or later.
https://developer.mozilla.org/en-us/docs/web/api/window/performance