Benchmark: function vs class

Script Preparation code:

var arr = [];

Tests:

function declaration
function functionDeclaration(item) { arr.push(item); } for (let i = 1; i < 10000; i++) { functionDeclaration(i); }
function expression
var functionExpression = function(item) { arr.push(item); }; for (let i = 1; i < 10000; i++) { functionExpression(i); }
class
class Test { constructor(item) { this.item = item; } addItem(){ arr.push(this.item) } } for (let i = 1; i < 10000; i++) { new Test(i).addItem(); }

Rendered benchmark preparation results:

Previous results

ⓘ Get performance results from real users on your website with Request Metrics.

Latest run results:

Run details: (Test run date: one month ago)

User agent: Mozilla/5.0 (X11; Ubuntu; Linux x86_64; rv:130.0) Gecko/20100101 Firefox/130.0

Browser/OS: Firefox 130 on Ubuntu

function vs class (version: 0)