Run results for: Property Assignment vs Symbol Assignment in Class Constructor

Run details:

User agent: Mozilla/5.0 (X11; Ubuntu; Linux x86_64; rv:109.0) Gecko/20100101 Firefox/114.0

Browser: Firefox 114

Operating system: Ubuntu

Device Platform: Desktop

Date tested: one year ago

Test name	Executions per second
Property	99961976.0 Ops/sec
Symbol	94740024.0 Ops/sec

Script Preparation code:

class Propertied {
    constructor() {
        this.key = 1;
    }
}
window.Propertied = Propertied;

const symbol = Symbol("key");
class Symboled {
    constructor() {
        this[symbol] = 1;
    }
}

window.Symboled = Symboled;

​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();
new Propertied();
Symbol
new Symboled();
new Symboled();