Run results for: Function vs dynamic function vs strict dynamic function

Run details:

User agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:122.0) Gecko/20100101 Firefox/122.0

Browser: Firefox 122

Operating system: Windows

Device Platform: Desktop

Date tested: 2 years ago

Dynamic function (strict)

5.2M/s

Dynamic function (non-strict)

5.2M/s

Arrow function (non-strict)

5.1M/s

Arrow function (strict)

5.1M/s

Normal function (strict)

5.0M/s

Normal function (non-strict)

5.0M/s

View exact numbers

Test name	Executions per second
✓ Dynamic function (strict)	5,213,578 Ops/sec
Dynamic function (non-strict)	5,188,007 Ops/sec
Arrow function (non-strict)	5,109,593 Ops/sec
Arrow function (strict)	5,073,956 Ops/sec
Normal function (strict)	5,047,458 Ops/sec
Normal function (non-strict)	5,044,656 Ops/sec

Script Preparation code:

function funcPN() {
  let r = Math.random().toString(36).substring(7).includes('x');
}
function funcPS() {
  "use strict";
  let r = Math.random().toString(36).substring(7).includes('x');
}
var funcAN = () => {
  let r = Math.random().toString(36).substring(7).includes('x');
}
var funcAS = () => {
  "use strict";
  let r = Math.random().toString(36).substring(7).includes('x');
}
var funcDN = new Function("let r = Math.random().toString(36).substring(7).includes('x');");
var funcDS = new Function("\"use strict\";let r = Math.random().toString(36).substring(7).includes('x');");

Tests:

Normal function (non-strict)
funcPN();
Normal function (strict)
funcPS();
Arrow function (non-strict)
funcAN();
Arrow function (strict)
funcAS();
Dynamic function (non-strict)
funcDN();
Dynamic function (strict)
funcDS();