DataView.prototype.setFloat64()

Baseline

20157

setFloat64() DataView 64 DataView 8

// ArrayBuffer 
const buffer = new ArrayBuffer(16);

const view = new DataView(buffer);
view.setFloat64(1, Math.PI);

console.log(view.getFloat64(1));
// : 3.141592653589793

setFloat64(byteOffset, value)
setFloat64(byteOffset, value, littleEndian)

byteOffset
value
littleEndian: false undefined

undefined

RangeError: byteOffset

setFloat64()

const buffer = new ArrayBuffer(10);
const dataview = new DataView(buffer);
dataview.setFloat64(0, 3);
dataview.getFloat64(1); // 3.785766995733679e-270


ECMAScript 2027 LanguageSpecification # sec-dataview.prototype.setfloat64

JavaScript
DataView
ArrayBuffer
Float64Array

MDN

MDN 202634

GitHub

DataView
1. DataView()
Object/Function
1. __proto__
2. constructor