Benchmark: Spread vs concat vs unshift (fair) to join arrays test2

Script Preparation code:

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

Tests:

spread
b=[...a,...b];
concat
b=a.concat(b);
unshift (forEach)
a.forEach(el => c.unshift(el)) b.forEach(el => c.unshift(el))
unshift (spread)
c.unshift(...a); c.unshift(...b);
push
var aLen = a.length; var bLen = b.length; var i = 0; for (; i < aLen; i++) { c.push(a[i]); } i = 0 for (; i < bLen; i++) { c.push(b[i]); }

Rendered benchmark preparation results:

Previous results

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Latest run results:

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

User agent: Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/101.0.4951.64 Safari/537.36

Browser/OS: Chrome 101 on Linux

Spread vs concat vs unshift (fair) to join arrays test2 (version: 0)