Run results for: TextDecoder vs String.fromCharCode 2023

Run details:

User agent: Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/121.0.0.0 Safari/537.36

Browser: Chrome 121

Operating system: Linux

Device Platform: Desktop

Date tested: 2 years ago

String.fromCharCode

4.7M/s

TextDecoder

1.8M/s

View exact numbers

Test name	Executions per second
✓ String.fromCharCode	4,663,309 Ops/sec
TextDecoder	1,825,749 Ops/sec

Script Preparation code:

var arr = new Uint8Array([84, 104, 105, 115, 32, 105, 115, 32, 97, 32, 85, 105, 110, 116,
    56, 65, 114, 114, 97, 121, 32, 99, 111, 110, 118, 101, 114, 116,
    101, 100, 32, 116, 111, 32, 97, 32, 115, 116, 114, 105, 110, 103
]);

Tests:

TextDecoder
new TextDecoder().decode(arr)
String.fromCharCode
String.fromCharCode.apply(null, arr)