Browse the latest JavaScript performance benchmarks created by the community.
for-in for-in hasOwnProperty object.keys forEach
Compares slice, substr and substring to each other when there is only a start index
judge an object property key is a number
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Ripped off from another user but fixed a bug in "spread"
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bytymighty
Compare different ways to search objects in an array given its id.
Test on isEqual performance
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Test
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!!x vs Boolean(x)
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Measure the performance of instanceOf operator vs comparing a basic string type.
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Comparison of using split('T') or slice(0, indexOf('T')) in parsing out a date from an ISO string. Does not include any extra checking from the indexOf to ensure proper formatting of the string. Does not include array size checking after the split.