Run results for: For vs Map 2

Run details:

User agent: Mozilla/5.0 (iPhone; CPU iPhone OS 15_6_1 like Mac OS X) AppleWebKit/605.1.15 (KHTML, like Gecko) Version/15.6.1 Mobile/15E148 Safari/604.1

Browser: Mobile Safari 15

Operating system: iOS 15.6.1

Device Platform: Mobile

Date tested: 2 years ago

Test name	Executions per second
Push	639.6 Ops/sec
Join	44856.9 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:

Push

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

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

Join
result = strs.map((a) => a)
result = strs.map((a) => a)

Run results for: For vs Map 2

Push

Join