Run results for: JS: Getter/Setter vs Direct Access Performance

Run details:

User agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/605.1.15 (KHTML, like Gecko) Version/18.3 Safari/605.1.15

Browser: Safari 18

Operating system: Mac OS X 10.15.7

Device Platform: Desktop

Date tested: one year ago

access static value

156.3M/s

access existing value

150.3M/s

access default value

145.9M/s

View exact numbers

Test name	Executions per second
✓ access static value	156,261,936 Ops/sec
access existing value	150,341,680 Ops/sec
access default value	145,871,904 Ops/sec

HTML Preparation code:

<!--your preparation HTML code goes here-->

Script Preparation code:

const existingA = 'truthy-value';
const existingB = undefined;
class Env {
   get a() {
      return existingA || 'a-default-value';
   }
   get b() {
      return existingB || 'b-default-value';
   }
}
const env = new Env();
const config = {
   c: 'c-value',
};

Tests:

access existing value
function a() { return env.a; } const aReading = a();
access default value
function b() { return env.b; } const bReading = b();
access static value
function c() { return config.c; } const cReading = c();