Latest Benchmarks

Browse the latest JavaScript performance benchmarks created by the community.

Speed of Arr.length and Slice

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IMMUTABLE COPY

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Pop vs length -1 vs at -1

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at(-1) vs (length - 1)

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Math.max vs reduce vs sort

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Traverse function vs NodeIterator vs TreeWalker for TEXT nodes

Let's compare the speed of 3 different ways to traverse the DOM.

TreeWalker vs querySelectorAll *

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Object.fromEntries vs reduce vs Map vs Object.assign vs forEach

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root.style.setProperty() vs <style>.textContent

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Destructuring vs direct usage

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filter.map

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appendChild v. insertAdjacentHTML

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appendChild vs. insertAdjacentHTML x1000

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appendChild vs. insertAdjacentHTML

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JavaScript spread operator vs Object.assign performance fixed 4

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JavaScript spread operator vs Object.assign performance fixed 3

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Convert Array to Object 2 - Object.fromEntries vs reduce vs forEach

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for-in vs object.keys vs object.values for objects v3

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object spread vs immutable-js merge 4.3.0

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for vs forEach vs for..in vs for..of (with fixed iterator item reference)

Compare loop performance

for-in vs object.keys vs object.values for objects v2

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React useCallback vs inline function vs inline handler

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remove vs filter

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Lodash cloneDeep VS spread operator large object

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