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Node.js Buffer.alloc() Method

❮ Buffer Module

Example

Create a 15 bytes buffer object:

var buf = Buffer.alloc(15);
console.log(buf);
Run example »

Definition and Usage

The Buffer.alloc() method creates a new buffer object of the specified size.

Syntax

 Buffer.alloc(size, fill, encoding);

Parameter Values

Parameter Description
size Required. Specifies the size of the buffer
fill Optional. Specifies a value to fill the buffer with if specified, otherwise the buffer is filled with 0 (zero-filled)
encoding Optional. If the buffer values are strings, this parameter specifies the encoding, default encoding is utf8. Supported values are:
"ascii"
"utf8"
"utf16le"
"ucs2"
"base64"
"latin1"
"binary"
"hex"

Technical Details

Return Value: None
Node.js Version: 5.10.0

More Examples

Example

Using the fill parameter:

var buf = Buffer.alloc(15, 'a');
console.log(buf);
Run example »

❮ Buffer Module