Benchmark: Array merge -> Concat | Push spread | Concat Apply | Push Apply | Spread

Script Preparation code:

var params = [ "hello", true, 1, { foo: 'bar' } ];

var concat = (input) => [].concat(params);
var push = (input) => [].push(...input);
var concatApply = (input) => Array.prototype.concat.apply([], input);
var pushApply = (input) => Array.prototype.push.apply([], input);
var spread = (input) => [...input];
var loop = (input) => {
  var acc = [];
  for(var i = 0, l = input.length; i < l; i++) {
    acc.push(input[i]);
  }
  return acc;
}

Tests:

Array.prototype.concat
const result = concat(params);
Array.prototype.push spread
const result = push(params);
Array.prototype.concat.apply
const result = concatApply(params);
Array.prototype.push.apply
const result = pushApply(params);
Spread
const result = spread(params);
Loop Push
const result = spread(params);

Rendered benchmark preparation results:

Suite status: <idle, ready to run>

Previous results

Test case name	Result
Array.prototype.concat
Array.prototype.push spread
Array.prototype.concat.apply
Array.prototype.push.apply
Spread
Loop Push

Fastest: N/A

Slowest: N/A

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Latest run results:

Run details: (Test run date: one year ago)

User agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/101.0.4951.64 Safari/537.36

Browser/OS: Chrome 101 on Windows

View result in a separate tab

Test name	Executions per second
Array.prototype.concat	3234382.0 Ops/sec
Array.prototype.push spread	3916858.0 Ops/sec
Array.prototype.concat.apply	1560972.0 Ops/sec
Array.prototype.push.apply	2314218.0 Ops/sec
Spread	4666604.0 Ops/sec
Loop Push	4761130.0 Ops/sec

Array merge -> Concat | Push spread | Concat Apply | Push Apply | Spread | Loop Push (version: 0)

Compare the new ES6 spread operator with the traditional concat() method

Comparing performance of: Array.prototype.concat vs Array.prototype.push spread vs Array.prototype.concat.apply vs Array.prototype.push.apply vs Spread vs Loop Push

Created: 5 years ago by: Guest

Jump to the latest result

Array.prototype.concat

Array.prototype.push spread

Array.prototype.concat.apply

Array.prototype.push.apply

Spread

Loop Push

Suite status: <idle, ready to run>

Experimental features:

Fastest: N/A

Slowest: N/A