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  1. 개발자를 위한 웹 기술
  2. JavaScript
  3. JavaScript 참고서
  4. 표준 내장 객체
  5. TypedArray
  6. TypedArray.prototype.byteLength
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TypedArray.prototype.byteLength

Baseline Widely available

This feature is well established and works across many devices and browser versions. It’s been available across browsers since 2015년 7월.

byteLength 접근자 속성은 형식화 배열의 길이(바이트)를 나타냅니다.

In this article

시도해 보기

// Create an ArrayBuffer with a size in bytes const buffer = new ArrayBuffer(8); const uint8 = new Uint8Array(buffer, 2); console.log(uint8.byteLength); // Expected output: 6

설명

byteLength 속성은 접근자 설정 함수가 undefined인 접근자 속성으로 이 속성은 읽을 수만 있습니다. 값은 TypedArray가 생성될 때 설정되며 변경할 수 없습니다. TypedArray가 byteOffset 또는 length를 지정하지 않으면 참조된 ArrayBuffer의 length가 반환됩니다. TypedArray는 TypedArray 객체 중 하나입니다.

예제

byteLength 속성 사용하기

js
const buffer = new ArrayBuffer(8); const uint8 = new Uint8Array(buffer); uint8.byteLength; // 8 (buffer의 byteLength와 일치) const uint8newLength = new Uint8Array(buffer, 1, 5); uint8newLength.byteLength; // 5 (Uint8Array를 만들 때 지정된 대로) const uint8offSet = new Uint8Array(buffer, 2); uint8offSet.byteLength; // 6 (생성된 Uint8Array의 오프셋으로 인해)

명세서

Specification
ECMAScript® 2027 Language Specification
# sec-get-%typedarray%.prototype.bytelength

브라우저 호환성

Enable JavaScript to view this browser compatibility table.

같이 보기

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  1. 표준 내장 객체
  2. TypedArray
  3. 정적 메서드
    1. TypedArray.from()
    2. TypedArray.of()
  4. 정적 속성
    1. TypedArray.BYTES_PER_ELEMENT
    2. get TypedArray[@@species]
  5. 인스턴스 메서드
    1. TypedArray.prototype.at()
    2. TypedArray.prototype.copyWithin()
    3. TypedArray.prototype.entries()
    4. TypedArray.prototype.every()
    5. TypedArray.prototype.fill()
    6. TypedArray.prototype.filter()
    7. TypedArray.prototype.find()
    8. TypedArray.prototype.findIndex()
    9. TypedArray.prototype.findLast()
    10. TypedArray.prototype.findLastIndex()
    11. TypedArray.prototype.forEach()
    12. includes()
    13. TypedArray.prototype.indexOf()
    14. TypedArray.prototype.join()
    15. TypedArray.prototype.keys()
    16. lastIndexOf()
    17. TypedArray.prototype.map()
    18. TypedArray.prototype.reduce()
    19. reduceRight()
    20. TypedArray.prototype.reverse()
    21. TypedArray.prototype.set()
    22. TypedArray.prototype.slice()
    23. TypedArray.prototype.some()
    24. TypedArray.prototype.sort()
    25. TypedArray.prototype.subarray()
    26. toLocaleString()
    27. TypedArray.prototype.toReversed()
    28. TypedArray.prototype.toSorted()
    29. TypedArray.prototype.toString()
    30. TypedArray.prototype.values()
    31. TypedArray.prototype.with()
    32. TypedArray.prototype[@@iterator]()
  6. 인스턴스 속성
    1. TypedArray.prototype.buffer
    2. TypedArray.prototype.byteLength
    3. TypedArray.prototype.byteOffset
    4. TypedArray.prototype.length
  7. 상속
  8. Object/Function
  9. 정적 메서드
    1. Function.prototype.apply()
    2. Function.prototype.bind()
    3. Function.prototype.call()
    4. Function.prototype.toSource()
    5. Function.prototype[@@hasInstance]()
  10. 정적 속성
    1. Function: displayName
    2. Function.prototype.length
    3. Function: name
    4. Function
    5. Function.arguments
    6. Function.prototype.caller
  11. 인스턴스 메서드
    1. Object.prototype.__defineGetter__()
    2. Object.prototype.__defineSetter__()
    3. Object.prototype.__lookupGetter__()
    4. Object.prototype.__lookupSetter__()
    5. Object.prototype.hasOwnProperty()
    6. Object.prototype.isPrototypeOf()
    7. Object.prototype.propertyIsEnumerable()
    8. Object.prototype.toLocaleString()
    9. Object.prototype.toString()
    10. Object.prototype.valueOf()
  12. 인스턴스 속성
    1. Object.prototype.__proto__
    2. Object.prototype.constructor
  13. 관련 페이지
  14. BigInt64Array
  15. BigUint64Array
  16. Float16Array
  17. Float32Array
  18. Float64Array
  19. Int8Array
  20. Int16Array
  21. Int32Array
  22. Uint8Array
  23. Uint8ClampedArray
  24. Uint16Array
  25. Uint32Array

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