ArrayBuffer.isView()
Baseline
Widely available
This feature is well established and works across many devices and browser versions. Itâs been available across browsers since 2015å¹´7æ.
ArrayBuffer.isView() ã¡ã½ããã¯ã渡ãããå¤ã ArrayBuffer ã®ãã¥ã¼ã®ãã¡ã®ä¸ã¤ãä¾ãã°åä»ãé
åãªãã¸ã§ã¯ãã DataView ã§ãããã©ããã夿ãã¾ãã
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// ArrayBuffer ããã¤ãåä½ã®ãµã¤ãºã§ä½æ
const buffer = new ArrayBuffer(16);
console.log(ArrayBuffer.isView(new Int32Array()));
// äºæ³ãããçµæ: true
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ArrayBuffer.isView(value)
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渡ããã弿°ã ArrayBuffer ã®ãã¥ã¼ã®ãã¡ã®ä¸ã¤ã§ããã° true ããããã§ãªããã° false ãè¿ãã¾ãã
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>isView ã®ä½¿ç¨
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ArrayBuffer.isView(); // false
ArrayBuffer.isView([]); // false
ArrayBuffer.isView({}); // false
ArrayBuffer.isView(null); // false
ArrayBuffer.isView(undefined); // false
ArrayBuffer.isView(new ArrayBuffer(10)); // false
ArrayBuffer.isView(new Uint8Array()); // true
ArrayBuffer.isView(new Float32Array()); // true
ArrayBuffer.isView(new Int8Array(10).subarray(0, 3)); // true
const buffer = new ArrayBuffer(2);
const dv = new DataView(buffer);
ArrayBuffer.isView(dv); // true
仿§æ¸
| Specification |
|---|
| ECMAScript® 2027 Language Specification> # sec-arraybuffer.isview> |
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