Run results for: Array Concat Test

Run details:

User agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_11_4) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/56.0.2924.87 Safari/537.36

Browser: Chrome 56

Operating system: Mac OS X 10.11.4

Device Platform: Other

Date tested: 7 years ago

Test name	Executions per second
Concat	754616.7 Ops/sec
Reduce	437469.6 Ops/sec

Script Preparation code:

function generateArray(count) {
  var arr = [];
  for (var i = 0; i < count; i++) {
    arr.push({ 
      value: i
    });
  }
}

var testArr = [generateArray(10000), generateArray(20000), generateArray(100000)]

Tests:

Concat
var result = Array.prototype.concat.apply([], testArr);
Reduce
var result = testArr.reduce(function(acc, val) { return acc.concat(val); }, []);

Run results for: Array Concat Test

Concat

Reduce