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DataView.prototype.buffer - JavaScript | MDN
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DataView.prototype.buffer

Baseline Widely available

This feature is well established and works across many devices and browser versions. Its been available across browsers since 2015 ..

buffer DataView ArrayBuffer SharedArrayBuffer, DataView .

In this article

// Create an ArrayBuffer
const buffer = new ArrayBuffer(123);

// Create a view
const view = new DataView(buffer);

console.log(view.buffer.byteLength);
// Expected output: 123

buffer , undefined, . DataView .

buffer

js
const buffer = new ArrayBuffer(8);
const dataview = new DataView(buffer);
dataview.buffer; // ArrayBuffer { byteLength: 8 }

Specification
ECMAScript 2027 LanguageSpecification
# sec-get-dataview.prototype.buffer

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  2. DataView
    1. DataView()
    1. getBigInt64()
    2. getBigUint64()
    3. getFloat16()
    4. getFloat32()
    5. getFloat64()
    6. getInt8()
    7. getInt16()
    8. getInt32()
    9. getUint8()
    10. getUint16()
    11. getUint32()
    12. setBigInt64()
    13. setBigUint64()
    14. setFloat16()
    15. setFloat32()
    16. setFloat64()
    17. DataView.prototype.setInt8()
    18. DataView.prototype.setInt16()
    19. DataView.prototype.setInt32()
    20. setUint8()
    21. setUint16()
    22. setUint32()
    1. DataView.prototype.buffer
    2. DataView.prototype.byteLength
    3. DataView.prototype.byteOffset
  7. Object/Function
    1. Function.prototype.apply()
    2. Function.prototype.bind()
    3. Function.prototype.call()
    4. Function.prototype.toString()
    5. [Symbol.hasInstance]()
    1. Function.displayName
    2. Function.length
    3. Function.name
    4. prototype
    5. Function.arguments
    6. Function.caller
    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()
    1. Object.prototype.__proto__
    2. Object.prototype.constructor
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