Benchmark: Array Concat vs ES6 Spread Operator

Script Preparation code:


var a = [1, 2, 3];
var b = [4, 5, 6];

Tests:

Rendered benchmark preparation results:

Previous results

Test case name	Result
Spread
Concat

ⓘ Get performance results from real users on your website with Request Metrics.

Latest run results:

Run details: (Test run date: 4 years ago)

User agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10.14; rv:72.0) Gecko/20100101 Firefox/72.0

Browser/OS: Firefox 72 on Mac OS X 10.14

Test name	Executions per second
Spread	12226360.0 Ops/sec
Concat	15266230.0 Ops/sec

Array Concat vs ES6 Spread Operator (version: 0)