Latest Benchmarks

Browse the latest JavaScript performance benchmarks created by the community.

if vs noop vs undef

if vs noop vs undef

textContent vs replaceChildren

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'a string`.toString() vs `${'a string'}`

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Lodash CloneDeep vs Immer Produce with heavy load

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IIFE vs IF

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Filter vs Set (get unique elements)

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innerHTML vs replaceChildren

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cloneNode vs createElement

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Sorted vs unsorted Array sort

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Hashing Benchmarks

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Lodash cloneDeep vs JSON.parse(JSON.stringify())

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splice VS filter: filtering big list of elements

100k list

slice VS splice VS shift: who is the fastest to keep constant size (fork no string push)

100k list splice and shift win, they mutate list slice loose, it creates a copy of list 7.5x slower

Array.from() vs new Array().fil() vs [..Array()]

Testing the difference between creating filled arrays.

Array.from() vs new Array() vs [..Array()]

Testing the difference between creating filled arrays.

node.contains() vs node.parentNode

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Delete vs Undefined

Compare JavaScript deletion on object vs setting to undefined.

Math.random().toString(36).substring(2, 12) vs Date.now()

Which is best for generating a unique key?

RXJS vs Vanilla v7.5.6

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addEventListener('resize') + innerWidth VS matchMedia() + matchMedia.addListener() VS CSS

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document.documentElement.clientWidth/Height vs window.innerWidth/Height

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filter + map vs reduce 12345153

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Markdown Performance Comparison (without Snarkdown)

A performance comparison of leading Javascript Markdown implementations.

array vs Float64Array vs mixed array

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Lodash cloneDeep vs structuredClone vs recursiveDeepCopy vs JSON clone vs Fast Copy

https://developer.mozilla.org/en-US/docs/Web/API/structuredClone

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