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Run results for:
.dot vs ['bracket'] notation
Fork of https://jsperf.com/dot-vs-square-bracket/5
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Embed Benchmark Result
<iframe src="https://measurethat.net/Embed?id=522754" width="100%" height="500px"></iframe>
Run details:
User agent:
Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/124.0.0.0 Safari/537.36
Browser:
Chrome 124
Operating system:
Windows
Device Platform:
Desktop
Date tested:
2 years ago
Benchmark engine:
Benchmark.js
dot / small object
18.1M/s
bracket / small object
17.5M/s
dot / big object
16.6M/s
bracket / big object
16.6M/s
View exact numbers
Test name
Executions per second
✓
dot / small object
18,141,146 Ops/sec
bracket / small object
17,513,544 Ops/sec
dot / big object
16,567,931 Ops/sec
bracket / big object
16,561,942 Ops/sec
Script Preparation code:
// setup a tiny object var foo = { prop25: "value25" }; // setup a really big object var bigObj = {}; for (var i = 0; i < 100000; i++) { bigObj["prop" + i] = "value" + i; }
Tests:
dot / small object
var a = foo.prop25;
bracket / small object
var a = foo['prop25'];
dot / big object
var a = bigObj.prop25;
bracket / big object
var a = bigObj['prop25'];