DataView.prototype.getBigInt64

Returns the signed 64-bit BigInt value at the specified byte offset from the start of the view.

Syntax

getBigInt64(byteOffset, littleEndian?)

Parameters

• byteOffset

  The byte offset in the view at which the value should be retrieved.

• littleEndian optional

  If true, a little-endian value will be read. If false or undefined, a big-endian value will be read.

Return value

A BigInt value.

Examples

var buffer = new ArrayBuffer(8)
var view = new DataView(buffer)
view.setBigInt64(0, 72057594037927935n)
view.getBigInt64(0)

72057594037927935n

var buffer = new ArrayBuffer(8)
var view = new DataView(buffer)
view.setBigInt64(0, 18446744073709551615n) // overflows to -1
view.getBigInt64(0)

-1n