Run results for: Concat vs Join

Run details:

User agent: Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/88.0.4324.146 Safari/537.36

Browser: Chrome 88

Operating system: Linux

Device Platform: Desktop

Date tested: 4 years ago

Test name	Executions per second
Concat	153.1 Ops/sec
Join	1838.5 Ops/sec

Script Preparation code:

var strs = Array.from(new Array(10000)).map(() => 'String concat. ')
var result = ''

AخA
 
var strs = Array.from(new Array(10000)).map(() => 'String concat. ')var result = ''

Tests:

for (let i = 0; i < strs.length; i++) {
  result += strs[i]
}

 
for (let i = 0; i < strs.length; i++) {  result += strs[i]}