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Run results for:
frozen VS unfrozen object iteration times
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Run details:
User agent:
Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/123.0.0.0 Safari/537.36
Browser:
Chrome 123
Operating system:
Linux
Device Platform:
Desktop
Date tested:
2 years ago
frozen iteration
33.4M/s
unfrozen iteration
33.2M/s
View exact numbers
Test name
Executions per second
✓
frozen iteration
33,350,230 Ops/sec
unfrozen iteration
33,221,232 Ops/sec
Script Preparation code:
var o1 = {a: 1}; var o2 = {a: 1}; Object.freeze(o2);
Tests:
unfrozen iteration
for(var key in o1);
frozen iteration
for(var key in o2);