BigInt64Array
Baseline
Widely available
This feature is well established and works across many devices and browser versions. Itโs been available across browsers since โจ2021ๅนด9ๆโฉ.
BigInt64Array ็ฑปๅ็ๆฐ็ปไปฃ่กจ็ฑ 64 ไฝๆ็ฌฆๅทๆดๆฐ็ปๆ็ๆฐ็ปใๅฆๆ้่ฆๆงๅถๅญ่้กบๅบ็่ฏ๏ผ่ฏทไฝฟ็จ DataView ไปฃๆฟใๅ
ๅฎนๅๅงๅไธบ 0nใไธๆฆๅปบ็ซ๏ผๅฐฑๅฏไปฅไฝฟ็จๅฏน่ฑก็ๆนๆณๆไฝฟ็จๆ ๅๆฐ็ป็ดขๅผ่ฏญๆณ๏ผๅณไฝฟ็จไธญๆฌๅท่กจ็คบๆณ๏ผๅผ็จๆฐ็ปไธญ็ๅ
็ด ใ
ๆ้ ๅฝๆฐ
BigInt64Array()-
ๅๅปบไธไธชๆฐ็
BigInt64Arrayๅฏน่ฑกใ
้ๆๅฑๆง
BigInt64Array.BYTES_PER_ELEMENT-
่ฟๅไธไธชๅ ็ด ๅคงๅฐ็ๆฐๅญๅผใ
BigInt64Array่ฟๅ8ใ
้ๆๆนๆณ
BigInt64Array.from()-
ไป็ฑปๆฐ็ปๆ่ ๅฏ่ฟญไปฃๅฏน่ฑกๅๅปบไธไธชๆฐ็
BigInt64Array๏ผๅฆ่ฏทๅ่งArray.from()ใ BigInt64Array.of()-
ไปๅฏๅๆฐ้็ๅๆฐๅๅปบไธไธชๆฐ็
BigInt64Array๏ผๅฆ่ฏทๅ่งArray.of()ใ
ๅฎไพๅฑๆง
BigInt64Array.prototype.buffer-
่ฟๅ่ขซ
BigInt64Arrayๅผ็จ็ArrayBufferใ่ฟๅจBigInt64Arrayๅฏน่ฑกๆๅปบๆถๆๅฐฑ่ขซ้ๅฎไบ๏ผๆไปฅๆฏๅช่ฏป็ใ BigInt64Array.prototype.byteLength-
่ฟๅ
BigInt64ArrayไปArrayBufferๅผๅง็้ฟๅบฆ๏ผไปฅๅญ่ไธบๅไฝ๏ผใ่ฟๅจBigInt64Arrayๅฏน่ฑกๆๅปบๆถๆๅฐฑ่ขซ้ๅฎไบ๏ผๆไปฅๆฏๅช่ฏป็ใ BigInt64Array.prototype.byteOffset-
่ฟๅ
BigInt64ArrayไปArrayBufferๅผๅง็ๅ็งป้๏ผไปฅๅญ่ไธบๅไฝ๏ผใ่ฟๅจBigInt64Arrayๅฏน่ฑกๆๅปบๆถๆๅฐฑ่ขซ้ๅฎไบ๏ผๆไปฅๆฏๅช่ฏป็ใ BigInt64Array.prototype.length-
่ฟๅ
BigInt64Arrayไธญ่ขซไฟ็็ๅ ็ด ไธชๆฐใ่ฟๅจBigInt64Arrayๅฏน่ฑกๆๅปบๆถๆๅฐฑ่ขซ้ๅฎไบ๏ผๆไปฅๆฏๅช่ฏป็ใ
ๅฎไพๆนๆณ
ไปๅ
ถ็ถๆฅๅฃ TypedArray ็ปงๆฟๅฎไพๆนๆณใ
็คบไพ
ไธๅ็ๆนๆณๅปๅๅปบไธไธช BigInt64Array
// From a length
var bigint64 = new BigInt64Array(2);
bigint64[0] = 42n;
console.log(bigint64[0]); // 42n
console.log(bigint64.length); // 2
console.log(bigint64.BYTES_PER_ELEMENT); // 8
// From an array
var arr = new BigInt64Array([21n, 31n]);
console.log(arr[1]); // 31n
// From another TypedArray
var x = new BigInt64Array([21n, 31n]);
var y = new BigInt64Array(x);
console.log(y[0]); // 21n
// From an ArrayBuffer
var buffer = new ArrayBuffer(32);
var z = new BigInt64Array(buffer, 0, 4);
// From an iterable
var iterable = (function* () {
yield* [1n, 2n, 3n];
})();
var bigint64 = new BigInt64Array(iterable);
// BigInt64Array[1n, 2n, 3n]
่ง่
| Specification |
|---|
| ECMAScriptยฎ 2026 Language Specification # sec-typedarray-objects |
ๆต่งๅจๅ ผๅฎนๆง
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