Run results for: Reduce vs map/join

Run details:

User agent: Mozilla/5.0 (Windows NT 5.1; rv:6.7) Goanna/6.7 PaleMoon/33.2

Browser: Pale Moon (Firefox Variant) 33

Operating system: Windows XP

Device Platform: Desktop

Date tested: one year ago

Benchmark engine: Benchmark.js

for

22K/s

map

12K/s

reduce

7K/s

for of

7K/s

View exact numbers

Script Preparation code:

var strings = [];
for (var i=0; i<1000; i++) {
  strings[i] = ""+i+i;
}

Tests:

for
var result = ""; for (var i=0; i<strings.length; i++) { result = result+' x-'+strings[i]; }
reduce
var result = strings.reduce(function(string, i) { return string+' x-'+i; }, ""); result=result.substring(1);
map
var result = strings.map(function(i) { return 'x-'+i; }).join(' ');
for of
var result = ""; for (var i of strings) { result += ' x-'+i; }