| CARVIEW |
Select Language
HTTP/2 200
content-type: text/html
x-guploader-uploadid: AAwnv3Jy_onJkGZPqVL2NyeqweniS3LHSjT265UC3kAiv7dlXueQOYUb5Uf-bNxSJ95Vh0fF
cache-control: public, max-age=3600
expires: Sat, 11 Oct 2025 16:13:17 GMT
last-modified: Fri, 10 Oct 2025 01:11:18 GMT
etag: W/"3436d146572cfd3741aa105ab252737a"
x-goog-generation: 1760058678507122
x-goog-metageneration: 1
x-goog-stored-content-encoding: identity
x-goog-stored-content-length: 162339
x-goog-meta-goog-reserved-file-mtime: 1760056922
x-goog-hash: crc32c=Z8vhqA==, md5=NDbRRlcs/TdBqhBaslJzeg==
x-goog-storage-class: STANDARD
accept-ranges: none
alt-svc: h3=":443"; ma=2592000,h3-29=":443"; ma=2592000
alt-svc: clear
referrer-policy: strict-origin-when-cross-origin
x-content-type-options: nosniff
strict-transport-security: max-age=63072000
content-security-policy: default-src 'self'; script-src 'report-sample' 'self' 'wasm-unsafe-eval' https://www.google-analytics.com/analytics.js https://www.googletagmanager.com/gtag/js assets.codepen.io production-assets.codepen.io https://js.stripe.com 'sha256-XNBp89FG76amD8BqrJzyflxOF9PaWPqPqvJfKZPCv7M=' 'sha256-YCNoU9DNiinACbd8n6UPyB/8vj0kXvhkOni9/06SuYw=' 'sha256-PZjP7OR6mBEtnvXIZfCZ5PuOlxoDF1LDZL8aj8c42rw='; script-src-elem 'report-sample' 'self' 'wasm-unsafe-eval' https://www.google-analytics.com/analytics.js https://www.googletagmanager.com/gtag/js assets.codepen.io production-assets.codepen.io https://js.stripe.com 'sha256-XNBp89FG76amD8BqrJzyflxOF9PaWPqPqvJfKZPCv7M=' 'sha256-YCNoU9DNiinACbd8n6UPyB/8vj0kXvhkOni9/06SuYw=' 'sha256-PZjP7OR6mBEtnvXIZfCZ5PuOlxoDF1LDZL8aj8c42rw='; style-src 'report-sample' 'self' 'unsafe-inline'; object-src 'none'; base-uri 'self'; connect-src 'self' developer.allizom.org bcd.developer.allizom.org bcd.developer.mozilla.org updates.developer.allizom.org updates.developer.mozilla.org https://*.google-analytics.com https://*.analytics.google.com https://*.googletagmanager.com https://incoming.telemetry.mozilla.org https://observatory-api.mdn.allizom.net https://observatory-api.mdn.mozilla.net https://api.github.com/search/issues stats.g.doubleclick.net https://api.stripe.com; font-src 'self'; frame-src 'self' interactive-examples.mdn.mozilla.net interactive-examples.mdn.allizom.net mdn.github.io live-samples.mdn.mozilla.net live-samples.mdn.allizom.net *.mdnplay.dev *.mdnyalp.dev *.play.test.mdn.allizom.net https://v2.scrimba.com https://scrimba.com jsfiddle.net www.youtube-nocookie.com codepen.io survey.alchemer.com https://js.stripe.com; img-src 'self' data: *.githubusercontent.com *.googleusercontent.com *.gravatar.com mozillausercontent.com firefoxusercontent.com profile.stage.mozaws.net profile.accounts.firefox.com developer.mozilla.org mdn.dev interactive-examples.mdn.mozilla.net interactive-examples.mdn.allizom.net wikipedia.org upload.wikimedia.org https://mdn.github.io/shared-assets/ https://mdn.dev/ https://*.google-analytics.com https://*.googletagmanager.com www.gstatic.com; manifest-src 'self'; media-src 'self' archive.org videos.cdn.mozilla.net https://mdn.github.io/shared-assets/; child-src 'self'; worker-src 'self';
x-frame-options: DENY
origin-trial: AxVILwizhbMjxFeHOn1P3R8niO1RJY/smaK4B4d1rLzc1gTaxtXMSaTi+FoigYgCw40uFRDwFcEAeqDR+vVLOW4AAABfeyJvcmlnaW4iOiJodHRwczovL2RldmVsb3Blci5tb3ppbGxhLm9yZyIsImZlYXR1cmUiOiJQcml2YXRlQXR0cmlidXRpb25WMiIsImV4cGlyeSI6MTc0MjA3OTYwMH0=
x-cloud-trace-context: dfdbea2f10e8dbb06abafb95a6f613fe
date: Sat, 11 Oct 2025 15:13:17 GMT
server: Google Frontend
via: 1.1 google
vary: Accept-Encoding
content-encoding: gzip
x-cache: miss
Performance: clearMeasures() メソッド - Web API | MDN
Toggle sidebar
このページはコミュニティーの尽力で英語から翻訳されました。MDN Web Docs コミュニティーについてもっと知り、仲間になるにはこちらから。
Performance: clearMeasures() メソッド
Baseline
Widely available
This feature is well established and works across many devices and browser versions. It’s been available across browsers since 2017年9月.
clearMeasures() メソッドは、すべての、または特定の PerformanceMeasure オブジェクトを、ブラウザーのパフォーマンスタイムラインから除去します。
構文
js
clearMeasures()
clearMeasures(name)
引数
name省略可-
文字列で、
PerformanceMeasureオブジェクトの名前を表します。この引数を省略すると、entryTypeが "measure" であるすべての項目が除去されます。
返値
なし (undefined)。
例
測定値を除去
パフォーマンス測定値をすべて、あるいは特定の項目だけを消去するには、次のように clearMeasures() メソッドを使用します。
js
// 測定値の束を作成
performance.measure("from navigation");
performance.mark("a");
performance.measure("from mark a", "a");
performance.measure("from navigation");
performance.measure("from mark a", "a");
performance.mark("b");
performance.measure("between a and b", "a", "b");
logMeasureCount(); // "Found this many entries: 5"
// "from navigation" PerformanceMeasure 項目のみを削除
performance.clearMeasures("from navigation");
logMeasureCount(); // "Found this many entries: 3"
// すべての PerformanceMeasure 項目を削除
performance.clearMeasures();
logMeasureCount(); // "Found this many entries: 0"
仕様書
| Specification |
|---|
| User Timing # dom-performance-clearmeasures |
ブラウザーの互換性
Loading…