From 33058f2b292b3a581333bdfb21b8f671898c5060 Mon Sep 17 00:00:00 2001 From: Peter Bengtsson Date: Tue, 8 Dec 2020 14:40:17 -0500 Subject: initial commit --- .../sharedarraybuffer/bytelength/index.html | 55 ++++++++++++++++++++++ 1 file changed, 55 insertions(+) create mode 100644 files/ja/web/javascript/reference/global_objects/sharedarraybuffer/bytelength/index.html (limited to 'files/ja/web/javascript/reference/global_objects/sharedarraybuffer/bytelength') diff --git a/files/ja/web/javascript/reference/global_objects/sharedarraybuffer/bytelength/index.html b/files/ja/web/javascript/reference/global_objects/sharedarraybuffer/bytelength/index.html new file mode 100644 index 0000000000..c5c80111ca --- /dev/null +++ b/files/ja/web/javascript/reference/global_objects/sharedarraybuffer/bytelength/index.html @@ -0,0 +1,55 @@ +--- +title: SharedArrayBuffer.prototype.byteLength +slug: Web/JavaScript/Reference/Global_Objects/SharedArrayBuffer/byteLength +tags: + - JavaScript + - Property + - Shared Memory + - SharedArrayBuffer + - TypedArrays +translation_of: Web/JavaScript/Reference/Global_Objects/SharedArrayBuffer/byteLength +--- +
{{JSRef}}
+ +

byteLength アクセサープロパティは 、{{jsxref("SharedArrayBuffer")}} の長さをバイト単位で表します。

+ +
{{EmbedInteractiveExample("pages/js/sharedarraybuffer-bytelength.html","shorter")}}
+ + + +

解説

+ +

byteLength プロパティは、セットアクセサー関数が undefined であるアクセサープロパティです。つまり、このプロパティは読み取り専用です。値は共有配列が生成されたときに決定され、変更できません。

+ +

+ +

byteLength の使用

+ +
var sab = new SharedArrayBuffer(1024);
+sab.byteLength; // 1024
+
+ +

仕様書

+ + + + + + + + + + +
仕様書
{{SpecName('ESDraft', '#sec-get-sharedarraybuffer.prototype.bytelength', 'SharedArrayBuffer.prototype.byteLength')}}
+ +

ブラウザーの互換性

+ + + +

{{Compat("javascript.builtins.SharedArrayBuffer.byteLength")}}

+ +

関連情報

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