Latest Benchmarks

Browse the latest JavaScript performance benchmarks created by the community.

testttttinnnnggg

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js timestamp cost

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Intl.DateTimeFormat with and without init

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element.children vs element.querySelectorAll vs element.querySelectorAll(:scope)

Really basic test comparing accessing children via parentElement.children vs via querySelectorAll vs scoped querySelectorAll. Not a great test for the use case, but people who are less lazy than me can fork it and make it do thing good.

arr unshift vs push + reverse (recreating size 50 array)

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string + vs concat

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arr unshift vs push + reverse (size 50 array)

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Trim regex string loop

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Check first and last char loop charAt startsWith slice regex.test 2

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Check first and last char loop charAt startsWith slice regex.test

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Check first and last char charAt startsWith slice regex.test

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Trim regex string

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Get words ending in number

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this vs variable containing this

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regex vs filter

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void 0 vs undefined vs variable containing undefined

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Lodash isEqual test3123

Test on isEqual performance2

Lodash isEqual test3

Test on isEqual performance2

replace vs slice 2024

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structuredClone vs spread vs json stringify & parse

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split map reverse vs for unshift

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Reduce vs FromEntries vs for loop

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Object.defineProperties with getOwnPropertyDescriptors vs Object.assign vs Object spread

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JS array shallow copy and sort

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1htrghdr

1