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Performance.timing 是唯讀的屬性,傳回的 PerformanceTiming 物件當中包含了效能與時間延遲相關的資訊。


timingInfo = performance.timing;


規格 狀態 備註
Navigation Timing
The definition of 'Performance.timing' in that specification.
Recommendation 初步定義


We're converting our compatibility data into a machine-readable JSON format. This compatibility table still uses the old format, because we haven't yet converted the data it contains. Find out how you can help!

功能 Chrome Firefox (Gecko) Internet Explorer Opera Safari (WebKit)
基本支援 6.0 7.0 (7.0) 9.0 15.0 No support
功能 Android Firefox Mobile (Gecko) Firefox OS IE Phone Opera Mobile Safari Mobile
基本支援 6.0 7.0 (7.0) 1.0 (7.0) 9.0 15.0 No support



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