Baseline Widely available
setResourceTimingBufferSize()
ã¡ã½ããã¯ã "resource
" ããã©ã¼ãã³ã¹é
ç®ãæ ¼ç´ãããã©ã¦ã¶ã¼ãªã½ã¼ã¹ã¿ã¤ãã³ã°ãããã¡ã¼ã®å¸æãããµã¤ãºãè¨å®ãã¾ãã
仿§æ¸ã§ã¯ããªã½ã¼ã¹ã¿ã¤ãã³ã°ãããã¡ã¼ã®åæå¤ã 250 以ä¸ã§ãããã¨ãè¦æ±ããã¦ãã¾ãã
ãã©ã¦ã¶ã¼ã®ããã©ã¼ãã³ã¹ãªã½ã¼ã¹ãã¼ã¿ãããã¡ã¼ãã¯ãªã¢ããã«ã¯ã次ã®ã¡ã½ããã使ç¨ãã¾ãã Performance.clearResourceTimings()
ã¡ã½ããã使ç¨ãã¾ãã
ãã©ã¦ã¶ã¼ã®ãªã½ã¼ã¹ã¿ã¤ãã³ã°ãããã¡ã¼ããã£ã±ãã«ãªã£ãã¨ãã«éç¥ãåå¾ããã«ã¯ã resourcetimingbufferfull
ã¤ãã³ããå¾
ã¡åããã¦ãã ããã
setResourceTimingBufferSize(maxSize)
弿°
maxSize
number
ã§ããã©ã¦ã¶ã¼ãããã©ã¼ãã³ã¹é
ç®ãããã¡ã¼ã«ä¿æããå¿
è¦ãããããã©ã¼ãã³ã¹é
ç®
ãªãã¸ã§ã¯ãã®æå¤§æ°ã表ãã¾ãã
ãªã (undefined
)ã
以ä¸ã®å¼ã³åºãã«ããããã©ã¦ã¶ã¼ã®ããã©ã¼ãã³ã¹ã¿ã¤ã ã©ã¤ã³ã« "resource
" ããã©ã¼ãã³ã¹é
ç®ã 500 åå
¥ãããã«ãªãã¾ãã
performance.setResourceTimingBufferSize(500);
ãããã¡ã¼ãµã¤ãºãç¾å¨ã®é
ç®æ°ããå°ããæ°ã«è¨å®ããã¨ãé
ç®ã¯é¤å»ããã¾ããã代ããã«ããããã¡ã¼ãã¯ãªã¢ããã«ã¯ Performance.clearResourceTimings()
ãå¼ã³åºãã¦ãã ããã
performance.getEntriesByType("resource").length; // 20
performance.setResourceTimingBufferSize(10);
performance.getEntriesByType("resource").length; // 20
performance.clearResourceTimings();
performance.getEntriesByType("resource").length; // 0
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