The getBigUint64() method is used to get an unsigned 64-bit integer (unsigned long long) at the particular byte offset from the start of the DataView.
dataview.getBigUint64(byteOffset [, littleEndian])
Parameters: This method accept two parameters as mentioned above and described below:
- byteOffset: This parameter specifies the offset, in bytes, from the start of the view to read the data.
- littleEndian: It is an optional parameter. If it is true then it indicates if the 64-bit int is stored in little- or big-endian format. If set to false or not-defined, then a big-endian value is read.
Return Value: It returns a BigInt value.
Example 1: In this example, the offset passed is 0, so the value printed is 0 because the value is not set.
Example 2: In this example, the offset passed is 4, so the value printed is 1234 because it is set before.