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forEach vs reduce vs map vs filter vs for eac2!
(version: 0)
Comparing performance of:
forEach vs reduce vs map vs filter vs for
Created:
2 years ago
by:
Guest
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Script Preparation code:
var arr = []; for (var i = 0; i < 12345; i++) { arr[i] = i; } function someFn(i) { return (i * 3 * 8 / 1200 * 0.002 / 40 * 0.2); } var sumForEach = 0, sumReduce = 0, sumMap = 0, sumFilter = 0, sumFor = 0;
Tests:
forEach
arr.forEach(item => sumForEach += someFn(item));
reduce
sumReduce = arr.reduce((lastValue, item) => { return sumReduce += someFn(item); });
map
arr.map(item => (sumMap += someFn(item)));
filter
arr.filter(item => (sumFilter += someFn(item)));
for
for (var j of arr) { sumFor += someFn(arr[j]); }
Rendered benchmark preparation results:
Suite status:
<idle, ready to run>
Run tests (5)
Previous results
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Test case name
Result
forEach
reduce
map
filter
for
Fastest:
N/A
Slowest:
N/A
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