PerformanceMeasure
Baseline
åºãå©ç¨å¯è½
ãã®æ©è½ã¯åºãå®è£ ããã¦ãããå¤ãã®ãã¼ã¸ã§ã³ã®ç«¯æ«ããã©ã¦ã¶ã¼ã§åä½ãã¾ãã2017å¹´9æä»¥éããã¹ã¦ã®ãã©ã¦ã¶ã¼ã§å©ç¨å¯è½ã§ãã
ã¡ã¢: ãã®æ©è½ã¯ã¦ã§ãã¯ã¼ã«ã¼å ã§å©ç¨å¯è½ã§ãã
PerformanceMeasure ã¯ãPerformanceEntry ãªãã¸ã§ã¯ãã®ãã¡ entryType ã "measure" ã§ãããã®ã®æ½è±¡ã¤ã³ã¿ã¼ãã§ã¤ã¹ã§ãããã®åã®é
ç®ã¯ãperformance.measure() ãå¼ã³åºãã¦ããã©ã¦ã¶ã¼ã®ããã©ã¼ãã³ã¹ã¿ã¤ã ã©ã¤ã³ã® 2 ã¤ã®ãã¼ã¯ã®éã®ååä»ã DOMHighResTimeStamp (ç¯å²) ã追å ãããã¨ã«ãã£ã¦ä½æããã¾ãã
ã¤ã³ã¹ã¿ã³ã¹ããããã£
ãã®ã¤ã³ã¿ã¼ãã§ã¤ã¹ã¯æ¬¡ã®ãã®ãå®ç¾©ãã¦ãã¾ãã
PerformanceMeasure.detail-
ãã®ç¯å²ã«é¢ããä»»æã®ã¡ã¿ãã¼ã¿ãæ ¼ç´ãã¾ãã
ãã®ã¤ã³ã¿ã¼ãã§ã¤ã¹ã¯ããããã£ãæã¡ã¾ãããã以ä¸ã®ããã«ããããã£ã修飾/å¶ç´ãããã¨ã§ä»¥ä¸ã® PerformanceEntry ããããã£ãæ¡å¼µãã¾ãã
PerformanceEntry.entryType-
"
measure" ãè¿ãã¾ãã PerformanceEntry.name-
ç¯å²ã
performance.measure()ã®å¼ã³åºãã§ä½æãããã¨ãã«ç¯å²ã«ä»ããããååãè¿ãã¾ãã PerformanceEntry.startTime-
performance.measure()ãå¼ã³åºãããã¨ãã«ç¯å²ã«ä¸ããããã¿ã¤ã ã¹ã¿ã³ããè¿ãã¾ãã PerformanceEntry.duration-
ç¯å²ã®é·ãã§ãã
DOMHighResTimeStampãè¿ãã¾ãï¼é常ãç¯å²ã®çµäºãã¼ã¯ã®ã¿ã¤ã ã¹ã¿ã³ãããéå§ãã¼ã¯ã®ã¿ã¤ã ã¹ã¿ã³ããå¼ãããã®ï¼ã
ã¡ã½ãã
ãã®ã¤ã³ã¿ã¼ãã§ã¤ã¹ã«ã¯ã¡ã½ãããããã¾ããã
ä¾
ã¦ã¼ã¶ã¼ã¿ã¤ãã³ã° API ã®ä½¿ç¨ã®ä¾ãåç §ãã¦ãã ããã
仿§æ¸
| 仿§æ¸ |
|---|
| User Timing > # performancemeasure > |