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      JS dataview setBigInt64()

      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

      SpecificationStatusComment
      DataView.prototype.setBigInt64 proposal

      See also

      目录
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