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
Feature | Chrome | Edge | Firefox (Gecko) | Internet Explorer | Opera | Safari (WebKit) |
---|---|---|---|---|---|---|
Basic support | 6.0 | (Yes) | 7.0 (7.0) | 9.0 | 15.0 | 8 |
Feature | Android | Android Webview | Edge | Firefox Mobile (Gecko) | IE Phone | Opera Mobile | Safari Mobile | Chrome for Android |
---|---|---|---|---|---|---|---|---|
Basic support | (Yes) | (Yes) | (Yes) | 7.0 (7.0) | 9.0 | 15.0 | 9 | (Yes) |
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Sheppy,
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