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while vs Array.reduce

Benchmark created by Huy Dinh on June 24, 2014

Setup

var characters = 'ABCDEFGHIJKLMNOPQRSTUVWXYZ1234567890';

Test runner

Ready to run.

Test Ops/sec

Reduce

Testing in
Test	Ops/sec
Reduce	`var keys = characters.split('').reduce(function(acc, char) { acc[char.charCodeAt(0)] = char; return acc; }, {});`	ready
While	`var keys = {}; var i = characters.length; while (i--) { keys[characters.charCodeAt(i)] = characters[i]; }`	ready

var keys = characters.split('').reduce(function(acc, char) {
  acc[char.charCodeAt(0)] = char;
  return acc;
}, {});

ready

While

var keys = {};
var i = characters.length;
while (i--) {
  keys[characters.charCodeAt(i)] = characters[i];
}

ready

Revisions

You can edit these tests or add more tests to this page by appending /edit to the URL.

Revision 1: published by Huy Dinh on June 24, 2014