摘要

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。

語法

timingInfo = performance.timing;

規格

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

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