Node.js Buffer.byteLength() Method
Example
Check the length of a buffer object:
var buf = Buffer.alloc(15);
var len = Buffer.byteLength(buf);
console.log(len);
Run example »
Definition and Usage
The Buffer.byteLength() method returns the length of a specified string object, in bytes.
Syntax
Buffer.byteLength(string, encoding);
Parameter Values
| Parameter | Description |
|---|---|
| string | Required. Specifies the object to calculate the length of. Supported types
are: String Buffer TypedArray DataView ArrayBuffer |
| encoding | Optional. If the object is a string, this parameter specified its encoding. Default encoding is "utf8" |
Technical Details
| Return Value: | The number of bytes in the specified object |
|---|---|
| Node.js Version: | 0.1.90 |
More Examples
Example
Return the number of bytes in the string "abc":
var len = Buffer.byteLength('abc');
console.log(len);
Run example »
