TypedArray.prototype.length

Baseline

Widely available

This feature is well established and works across many devices and browser versions. Itâs been available across browsers since 2015ë 7ì.

TypedArray ì¸ì¤í´ì¤ì length ì ê·¼ì ìì±ì ì´ íìí ë°°ì´ì ììì ìë¥¼ ë°íí©ëë¤.

ìëí´ ë³´ê¸°

// Create an ArrayBuffer with a size in bytes
const buffer = new ArrayBuffer(8);
const uint8 = new Uint8Array(buffer, 2);

console.log(uint8.length);
// Expected output: 6

length ìì±ì ì¤ì ë ì ê·¼ì í¨ìê° undefinedì¸ ì ê·¼ì ìì±ì¼ë¡, ì´ ìì±ì ì½ì ìë§ ììµëë¤. ì´ ê°ì TypedArrayë¥¼ êµ¬ì±í ë ì¤ì ëë©° ë³ê²½í ì ììµëë¤. TypeArrayìì byteOffset ëë lengthë¥¼ ì§ì íì§ ìì¼ë©´ ì°¸ì¡°ë ArrayBufferì ê¸¸ì´ê° ë°íë©ëë¤. TypeArrayë TypeArray ê°ì²´ ì¤ íëìëë¤.

ìì

`length` ìì± ì¬ì©íê¸°

const buffer = new ArrayBuffer(8);

let uint8 = new Uint8Array(buffer);
uint8.length; // 8 (ë²í¼ì ê¸¸ì´ì ì¼ì¹)

uint8 = new Uint8Array(buffer, 1, 5);
uint8.length; // 5 (Uint8Arrayë¥¼ ë§ë¤ ë ì§ì ë ëë¡)

uint8 = new Uint8Array(buffer, 2);
uint8.length; // 6 (ë§ë  Uint8Arrayì ì¤íìì¼ë¡ ì¸í´)