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Run results for: TextDecoder 'ascii' vs String.fromCharCode

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Run details:
Mozilla/5.0 (iPhone; CPU iPhone OS 16_7_7 like Mac OS X) AppleWebKit/605.1.15 (KHTML, like Gecko) Version/16.6 Mobile/15E148 Safari/604.1
Mobile Safari 16
iOS 16.7.7
Mobile
one year ago
Test name Executions per second
String.fromCharCode 1480387.4 Ops/sec
TextDecoder 2996744.0 Ops/sec
Script Preparation code:
​x
 
var bytes = [84,104,105,115,32,105,115,32,97,32,115,97,109,112,108,101,32,112,97,114,97,103,114,97,112,104,46];
var bufferArray = new Uint16Array(bytes);
var decoder = new TextDecoder('ascii'); // default 'utf-8' or 'utf8'
​
Tests:

  • String.fromCharCode

     
    String.fromCharCode.apply(null, bufferArray);

  • TextDecoder

     
    decoder.decode(bufferArray);