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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=578431" width="100%" height="500px"></iframe>
Run details:
User agent:
Mozilla/5.0 (X11; Linux x86_64; rv:133.0) Gecko/20100101 Firefox/133.0
Browser:
Firefox 133
Operating system:
Linux
Device Platform:
Desktop
Date tested:
one year ago
direct set
1901.0M/s
proxied set
1849.7M/s
proxied get
1363.1M/s
Direct get
1354.4M/s
View exact numbers
Test name
Executions per second
✓
direct set
1,900,957,184 Ops/sec
proxied set
1,849,694,720 Ops/sec
proxied get
1,363,131,136 Ops/sec
Direct get
1,354,359,296 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;