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Node.js buffer write() Method

❮ Buffer Module


Overwrite parts of an existing buffer:

var buf = Buffer.from('abcdef');

buf.write('qq', 2);

Run example »

Definition and Usage

The write() method writes the specified string into a buffer, at the specified position.


buffer.write(value, start, bytes, encoding);

Parameter Values

Parameter Description
value Required. The string to insert
start Optional. Where to start writing. Default 0
bytes Optional. How many bytes to write. Default length of buffer minus start position
encoding Optional. The encoding of the value. Default 'utf8'


Technical Details

Return Value: A Number, representing the number of bytes written
Node.js Version: 0.1.90

❮ Buffer Module