Benchmark: JavaScript spread operator vs Slice/Splice performance 2edas

Script Preparation code:

const ITERATIONS = 500000;
var index = ITERATIONS/2;
var n = Math.random();

var list = [];
for (let i = 0; i < length; i += 1) {
  list.push(Math.random());
}

Tests:

Array clone with spread operator
const clone = [...list];
Array clone with slice
const clone = list.slice();

Rendered benchmark preparation results:

Suite status: <idle, ready to run>

Previous results

Test case name	Result
Array clone with spread operator
Array clone with slice

Fastest: N/A

Slowest: N/A

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Latest run results:

Run details: (Test run date: 2 years ago)

User agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/100.0.4896.127 Safari/537.36

Browser/OS: Chrome 100 on Mac OS X 10.15.7

View result in a separate tab

Test name	Executions per second
Array clone with spread operator	5997488.0 Ops/sec
Array clone with slice	15556040.0 Ops/sec

JavaScript spread operator vs Slice/Splice performance 2edas (version: 0)

Comparing performance of: Array clone with spread operator vs Array clone with slice

Created: 2 years ago by: Guest

Jump to the latest result

Array clone with spread operator

Array clone with slice

Suite status: <idle, ready to run>

Experimental features:

Fastest: N/A

Slowest: N/A