Break up array into multiple arrays using slice and filter
Spread vs push
A comparison of the performance of the spread operator, [ ...array ], vs. Array.map(i => ...) and
Compare Concat->Push with Spread->Concat
test test
Compare the new ES6 spread operator with the traditional concat() method
Faster way to create new dom elements before insertion
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Source code: GitHub/MeasureThat.net
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Based on: Benchmark.js
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Python benchmarks support: Pyodide