Baseline Widely available
Uint8Array()
ã³ã³ã¹ãã©ã¯ã¿ã¼ã¯ã Uint8Array
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new Uint8Array()
new Uint8Array(length)
new Uint8Array(typedArray)
new Uint8Array(object)
new Uint8Array(buffer)
new Uint8Array(buffer, byteOffset)
new Uint8Array(buffer, byteOffset, length)
ã¡ã¢: Uint8Array()
ã¯ã new
ã使ç¨ããå ´åã®ã¿æ§ç¯ã§ãã¾ãã new
ã使ç¨ããã«å¼ã³åºãã¨ã TypeError
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TypedArray
ãåç
§ãã¦ãã ããã
TypedArray
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§ãã¦ãã ããã
// é·ããæå®
const uint8 = new Uint8Array(2);
uint8[0] = 42;
console.log(uint8[0]); // 42
console.log(uint8.length); // 2
console.log(uint8.BYTES_PER_ELEMENT); // 1
// é
åãã
const x = new Uint8Array([21, 31]);
console.log(x[1]); // 31
// ä»ã®åä»ãé
åãã
const y = new Uint8Array(x);
console.log(y[0]); // 21
// ArrayBuffer ãã
const buffer = new ArrayBuffer(8);
const z = new Uint8Array(buffer, 1, 4);
console.log(z.byteOffset); // 1
// å復å¯è½ãªãã¸ã§ã¯ããã
const iterable = (function* () {
yield* [1, 2, 3];
})();
const uint8FromIterable = new Uint8Array(iterable);
console.log(uint8FromIterable);
// Uint8Array [1, 2, 3]
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