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DataView.prototype.setFloat32()

Baseline Widely available

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

DataView setFloat32() DataView 4 32 . , .

In this article

// Create an ArrayBuffer with a size in bytes
const buffer = new ArrayBuffer(16);

const view = new DataView(buffer);
view.setFloat32(1, Math.PI);

console.log(view.getFloat32(1));
// Expected output: 3.1415927410125732

js
setFloat32(byteOffset, value)
setFloat32(byteOffset, value, littleEndian)

byteOffset

.

value

. .

littleEndian Optional

. false undefined .

undefined.

RangeError

byteOffset .

setFloat32()

js
const buffer = new ArrayBuffer(10);
const dataview = new DataView(buffer);
dataview.setFloat32(0, 3);
dataview.getFloat32(1); // 2

Specification
ECMAScript 2027 LanguageSpecification
# sec-dataview.prototype.setfloat32

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  2. DataView
    1. DataView()
    1. DataView.prototype.getBigInt64()
    2. DataView.prototype.getBigUint64()
    3. DataView.prototype.getFloat16()
    4. DataView.prototype.getFloat32()
    5. DataView.prototype.getFloat64()
    6. DataView.prototype.getInt8()
    7. DataView.prototype.getInt16()
    8. DataView.prototype.getInt32()
    9. DataView.prototype.getUint8()
    10. DataView.prototype.getUint16()
    11. DataView.prototype.getUint32()
    12. DataView.prototype.setBigInt64()
    13. DataView.prototype.setBigUint64()
    14. DataView.prototype.setFloat16()
    15. DataView.prototype.setFloat32()
    16. DataView.prototype.setFloat64()
    17. DataView.prototype.setInt8()
    18. DataView.prototype.setInt16()
    19. DataView.prototype.setInt32()
    20. DataView.prototype.setUint8()
    21. DataView.prototype.setUint16()
    22. DataView.prototype.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.toSource()
    5. Function.prototype[@@hasInstance]()
    1. Function: displayName
    2. Function.prototype.length
    3. Function: name
    4. Function
    5. Function.arguments
    6. Function.prototype.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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