Benchmark: splice vs copyWithin

Script Preparation code:

var colors = ["red", "blue"];
var index = 1;
var value = "white";

Tests:

splice()
colors.splice(index, 0, "white"); colors.splice(index, 1)
copyWithin()
colors.length++; colors.copyWithin(index + 1, index); colors[index] = value; colors.splice(index, 1)

Rendered benchmark preparation results:

Previous results

Test case name	Result
splice()
copyWithin()

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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/110.0.0.0 Safari/537.36 Edg/110.0.1587.41

Browser/OS: Chrome 110 on Windows

Test name	Executions per second
splice()	7987074.0 Ops/sec
copyWithin()	3448403.0 Ops/sec

splice vs copyWithin (version: 0)