Node.js buffer fill() Method

Fill the buffer with the letter 'a':

var buf = Buffer.alloc(15);

buf.fill('a');

console.log(buf);

Definition and Usage

The fill() method fills a buffer with the specified value.

You can fill the whole buffer or parts of the buffer, using the start and end parameters.

buffer.fill(value, start, end, encoding);

Parameter	Description
value	Required. A buffer to compare with
start	Optional. Where to start the filling. Default 0
end	Optional. Where to end the filling. Default at the end of the buffer
encoding	Optional. The encoding of the value. Default "utf8"

Return Value:	The buffer object, with the new fillings.
Node.js Version:	0.5.0

Fill parts of the buffer with the letter 'a':

var buf = Buffer.alloc(15);

buf.fill('a', 5, 10);

console.log(buf);