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Public vs Private properties
Comparing the get and set performance of directly accessing a field on a class versus using a getter/setter pair on a private property.
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<iframe src="https://measurethat.net/Embed?id=599213" width="100%" height="500px"></iframe>
Run details:
User agent:
Mozilla/5.0 (Android 15; Mobile; rv:137.0) Gecko/137.0 Firefox/137.0
Browser:
Firefox Mobile 137
Operating system:
Android
Device Platform:
Mobile
Date tested:
one year ago
direct set
638.6M/s
proxied set
636.2M/s
proxied get
562.9M/s
Direct get
553.8M/s
View exact numbers
Test name
Executions per second
✓
direct set
638,606,784 Ops/sec
proxied set
636,245,824 Ops/sec
proxied get
562,923,328 Ops/sec
Direct get
553,819,520 Ops/sec
Script Preparation code:
class Test { get bar() { return this.#bar }; set bar(v) { this.#bar = v }; foo = 1; #bar = 1; } var test = new Test; var x;
Tests:
Direct get
x = test.foo;
proxied get
x = test.bar
direct set
test.foo = 2;
proxied set
test.bar = 2;