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.
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Syntax
js
getBigInt64(byteOffset)
getBigInt64(byteOffset, littleEndian)
Parameters
byteOffset-
The offset, in bytes, from the start of the view to read the data from.
littleEndianOptional-
Indicates whether the data is stored in little- or big-endian format. If
falseorundefined, a big-endian value is read.
Return value
A BigInt from -263 to 263-1, inclusive.
Exceptions
RangeError-
Thrown if the
byteOffsetis set such that it would read beyond the end of the view.
Examples
Using getBigInt64()
js
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
| Specification |
|---|
| ECMAScript Language Specification # sec-dataview.prototype.getbigint64 |
Browser compatibility
| desktop | mobile | server | |||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
getBigInt64 | |||||||||||||