PerformanceLongTaskTiming: attribution 屬性
PerformanceLongTaskTiming 介面的只讀屬性 attribution 返回一個 TaskAttributionTiming 物件陣列。
值
一個 TaskAttributionTiming 物件陣列。
示例
記錄長任務的歸因
js
const observer = new PerformanceObserver((list) => {
list.getEntries().forEach((entry) => {
entry.attribution.forEach((attributionEntry) => {
console.log(attributionEntry);
});
});
});
observer.observe({ type: "longtask", buffered: true });
規範
| 規範 |
|---|
| Long Tasks API # dom-performancelongtasktiming-attribution |
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