Object loops: for...in vs Object.keys+forEach (ES5) vs for...of (ES6) vs Object.entries (ES8)
6 years ago
User agent:
Mozilla/5.0 (Macintosh; Intel Mac OS X 10_14_0) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/69.0.3497.100 Safari/537.36
Test name |
Executions per second |
for...in |
2465.1 Ops/sec |
Object.keys+forEach (ES5) |
3423.7 Ops/sec |
for...of - keys (ES6) |
3565.3 Ops/sec |
for...of - values (ES6) |
3179.7 Ops/sec |
for...of - entries (ES8) |
2579.3 Ops/sec |
Object.entries (ES8) |
2583.2 Ops/sec |
Tests:
-
for...in
-
Object.keys+forEach (ES5)
-
for...of - keys (ES6)
-
for...of - values (ES6)
-
for...of - entries (ES8)
-
Object.entries (ES8)
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