Run details:
Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/85.0.4183.83 Safari/537.36 Edg/85.0.564.41
Chrome 85
Windows
Desktop
4 years ago
Test name Executions per second
Property 6140029.0 Ops/sec
Symbol 6212467.5 Ops/sec
Script Preparation code:
x
 
class Propertied {
    constructor() {
        this.key = 1;
    }
}
window.Propertied = Propertied;
const symbol = Symbol("key");
class Symboled {
    constructor() {
        this[symbol] = 1;
    }
}
window.Symboled = Symboled;
Tests:
  • Property

     
    new Propertied();
  • Symbol

     
    new Symboled();