JS dataview setBigInt64()

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The setBigInt64() method stores a signed 64-bit integer (long long) value at the specified byte offset from the start of the DataView.

The source for this interactive example is stored in a GitHub repository. If you’d like to contribute to the interactive examples project, please clone https://github.com/mdn/interactive-examples and send us a pull request.

Syntax

dataview.setBigInt64(byteOffset, value [, littleEndian])

Parameters

byteOffset

The offset, in bytes, from the start of the view to store the data from.

value

The value to set as a BigInt. The highest possible value that fits in a signed 64-bit integer is 2n ** (64n -1n) - 1n (9223372036854775807n). Upon overflow, it will be negative (-9223372036854775808n).

littleEndian

Optional Indicates whether the 64-bit int is stored in little- or big-endian format. If false or undefined, a big-endian value is written.

Return value

undefined.

Errors thrown

RangeError

Thrown if the byteOffset is set such that it would store beyond the end of the view.

Examples

Using the setBigInt64 method

var buffer = new ArrayBuffer(8);
var dataview = new DataView(buffer);
dataview.setBigInt64(0, 3n);
dataview.getBigInt64(0); // 3n

Specifications

Specification Status Comment
DataView.prototype.setBigInt64 proposal

See also


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