The Window
interface's performance
property returns a Performance
object, which can be used to gather performance information about the current document. It serves as the point of exposure for the Performance Timeline API, the High Resolution Time API, the Navigation Timing API, the User Timing API, and the Resource Timing API.
Syntax
performanceData = window.performance;
Value
A Performance
object offering access to the performance and timing-related information offered by the APIs it exposes.
Specifications
Specification | Status | Comment |
---|---|---|
High Resolution Time The definition of 'window.performance' in that specification. |
Recommendation | Defines now() method. |
Browser compatibility
The compatibility table on this page is generated from structured data. If you'd like to contribute to the data, please check out https://github.com/mdn/browser-compat-data and send us a pull request.
Desktop | Mobile | |||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|
performance | Chrome Full support 6 | Edge Full support 12 | Firefox Full support 7 | IE Full support 9 | Opera Full support 15 | Safari Full support 8 | WebView Android Full support Yes | Chrome Android Full support Yes | Firefox Android Full support 7 | Opera Android Full support 14 | Safari iOS Full support 9 | Samsung Internet Android Full support Yes |
Legend
- Full support
- Full support