Latest Benchmarks

Browse the latest JavaScript performance benchmarks created by the community.

Concat vs spread for a single value

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Javascript Split vs Regex

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Map convert

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Object cloning comparision

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Math.max() vs for..if

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Single append vs multiple appendChild for large number of nodes

Just how bad is appendChild compared to append, anyway?

Lodash sort vs array.prototype.sort - compare with taking ids from different array

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Overhead from creating closure

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querySelector vs getElementsByTagName[0]

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firstChild vs childNodes

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eval vs json parse better

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JS typed arrays

Tests conventional canvas manipulation vs using typed arrays as discussed here: https://hacks.mozilla.org/2011/12/faster-canvas-pixel-manipulation-with-typed-arrays/

Delete vs Rest

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for-push vs for-noop vs flatMap

Comparing performance of: for-push vs for-noop vs flatMap

for-noop vs flatMap

Comparing performance of: for-noop vs flatMap

for-push vs filter

Comparing performance of: flatMap vs for-push

toFixed + parse vs toPrecision vs Math.round() vs Math.floorfast

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filter-foreach vs foreach+if

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Regex extract info vs Split

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Regex extract info

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RegEx.test vs. String.includes vs. String.match vs String.indexOf (~2000 characters)

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RegEx.test vs. String.includes vs. String.match (2000 character)

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Loadash isEmpty vs Object.keys length

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RegEx.test vs. String.includes vs. String.match vs String.match(regex) for starting string

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for of loop

for item of array v.s. for n=0;n<array.length;++n