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for-in vs object.keys improved
(version: 1)
Comparing performance of:
for-in vs Object.keys
Created:
one year ago
by:
Guest
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Script Preparation code:
var obj = { 'a': 1, 'b': 1, 'c': 1, 'd': 1, 'e': 1, 'f': 1, 'g': 1 };
Tests:
for-in
for (var i=10000; i > 0; i--) { for (const key in obj) { console.log(key); } }
Object.keys
for (var i=10000; i > 0; i--) { for (const key of Object.keys(obj)) { console.log(key); } }
Rendered benchmark preparation results:
Suite status:
<idle, ready to run>
Run tests (2)
Previous results
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Test case name
Result
for-in
Object.keys
Fastest:
N/A
Slowest:
N/A
Latest run results:
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