Latest Benchmarks

Browse the latest JavaScript performance benchmarks created by the community.

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lodash difference vs array filter

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some() vs every()

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Lodash.js vs Native random2

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Qry vs id

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Creating partial objects (Array.reduce vs for loop)

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Access from Object.seal vs Object.freeze vs normal

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JSON Querying Comparisons

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JavaScript spread operator vs Object.assign performance (same specs)

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desctruct vs property assign for 1000 items

((acc, key) => ({ ...acc, [key]: value}) vs { acc[key] = value; return acc }

For, While

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Reduce vs FlatMap (500 x 20)

Speed comparison between Array.prototype.reduce using array destructuring vs Array.prototype.flatMap, for a 500 by 20 two-dimensional array, simulating 20 pages each with 500 items

Reduce vs FlatMap (500 x 500)

Speed comparison between Array.prototype.reduce using array destructuring vs Array.prototype.flatMap, for a 500 by 500 two-dimensional array, simulating 500 pages each with 500 items

Reduce vs FlatMap (500 x 100)

Speed comparison between Array.prototype.reduce using array destructuring vs Array.prototype.flatMap, for a 500 by 100 two-dimensional array, simulating 100 pages each with 500 items

Reduce vs Flat (500 x 500)

Speed comparison between Array.prototype.reduce using array destructuring vs Array.prototype.flat, for a 500 by 100 two-dimensional array, simulating 500 pages each with 500 items

Reduce vs Flat (500 x 100)

Speed comparison between Array.prototype.reduce using array destructuring vs Array.prototype.flat, for a 500 by 100 two-dimensional array, simulating 100 pages each with 500 items

stripped down reduce vs map + join

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Regex vs indexOf vs Set

Testing some things

Object.prototype.toString.call vs typeof (only isObject, full implementation)

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Object.prototype.toString.call vs typeof (only isObject)

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desctruct vs property assign

((acc, key) => ({ ...acc, [key]: value}) vs { acc[key] = value; return acc }

Array.filter vs for/of

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lodash join vs native join

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offsetwidth/getBoundingClientRect

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offsetwidth vs getBoundingClientRect

Comparing performance of: offsetwidth vs getBoundingClientRect