Benchmark: Array Concat Test

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); }, []);

Rendered benchmark preparation results:

Suite status: <idle, ready to run>

Previous results

Test case name	Result
Concat
Reduce

Fastest: N/A

Slowest: N/A

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Latest run results:

Run details: (Test run date: 7 years ago)

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/OS: Chrome 56 on Mac OS X 10.11.4

View result in a separate tab

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

Array Concat Test (version: 0)

Comparing performance of: Concat vs Reduce

Created: 7 years ago by: Guest

Jump to the latest result

Concat

Reduce

Suite status: <idle, ready to run>

Experimental features:

Fastest: N/A

Slowest: N/A