Node.js | Buffer.readUInt16BE() Method
The Buffer.readUInt16BE() method is an inbuilt application programming interface of class Buffer within the Buffer module which is used to read 16-bit value from an allocated buffer at a specified offset.
Buffer.readUInt16BE( offset )
Parameters: This method accepts single parameter offset that specifies the number of bytes to skip before read or simply signify the index in the buffer. The value of buffer lies 0 <= offset <= Buffer.length – 2. Its default value is 0.
Return Value: This method returns an unsigned 16-bit integer value that is read from buffer in big endian format (Buffer.readUInt16LE() read 16 bit in little endian format).
Below examples illustrate the use of Buffer.readUInt16BE() method in Node.js:
<Buffer 21 09 19 98> 2109 919 1998
<Buffer 21 09 19 98> 2109 921 919 1909 1998 9819
<Buffer 21 09 19 98> 2109 919 1998 internal/buffer.js:49 throw new ERR_OUT_OF_RANGE(type || 'offset', ^ RangeError [ERR_OUT_OF_RANGE]: The value of "offset" is out of range. It must be >= 0 and <= 2. Received 3 at boundsError (internal/buffer.js:49:9) at Buffer.readUInt16BE (internal/buffer.js:215:5) . . .
Note: The above program will compile and run by using the
node index.js command.