UNB/ CS/ David Bremner/ teaching/ cs2613/ books/ mdn/ Reference/ Global Objects/ DataView/ DataView.prototype.getBigInt64()

The getBigInt64() method of DataView instances reads 8 bytes starting at the specified byte offset of this DataView and interprets them as a 64-bit signed integer. There is no alignment constraint; multi-byte values may be fetched from any offset within bounds.

Syntax

getBigInt64(byteOffset)
getBigInt64(byteOffset, littleEndian)

Parameters

Return value

A BigInt from -263 to 263-1, inclusive.

Exceptions

Examples

Using getBigInt64()

const { buffer } = new Uint8Array([0, 1, 2, 3, 4, 5, 6, 7, 8, 9]);
const dataview = new DataView(buffer);
console.log(dataview.getBigInt64(1)); // 72623859790382856n

Specifications

Browser compatibility

See also