Run results for: Reduce vs map/join

Run details:

User agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_13_4) AppleWebKit/605.1.15 (KHTML, like Gecko) Version/11.1 Safari/605.1.15

Browser: Safari 11

Operating system: Mac OS X 10.13.4

Device Platform: Other

Date tested: 5 years ago

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; }, "");
map
var result = strings.map(function(i) { return "x-"+i; }).join(' ');