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Run results for:
hasOwnProperty vs direct access (bool) vs in
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Run details:
User agent:
Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/127.0.0.0 Safari/537.36
Browser:
Chrome 127
Operating system:
Windows
Device Platform:
Desktop
Date tested:
2 years ago
Benchmark engine:
Benchmark.js
direct access (bool)
7.7M/s
hasOwnProperty
6.9M/s
in
5.7M/s
View exact numbers
Test name
Executions per second
✓
direct access (bool)
7,675,464 Ops/sec
hasOwnProperty
6,903,707 Ops/sec
in
5,662,880 Ops/sec
Script Preparation code:
var x = { a: 1, b: 2, c: 3, d: 4, e: 5, f: 6, g: 7, h: 8, i: 9}
Tests:
hasOwnProperty
x.hasOwnProperty("a")
direct access (bool)
x["a"]
in
"a" in x