Run results for: Reduce vs map/join

Run details:

User agent: Mozilla/5.0 (Windows NT 6.3; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/66.0.3359.139 Safari/537.36

Browser: Chrome 66

Operating system: Windows 8.1

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(' ');
for of
var result = ""; for (var i of strings) { result += 'x-'+i+' '; }