Run results for: function vs class with external declarations

Run details:

User agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/132.0.0.0 Safari/537.36 Edg/132.0.0.0

Browser: Chrome 132

Operating system: Windows

Device Platform: Desktop

Date tested: 3 months ago

Test name	Executions per second
function declaration	79686.0 Ops/sec
function expression	79841.1 Ops/sec
class	79922.6 Ops/sec

Script Preparation code:

var arr = 1
var functionExpression = function(item) {
  arr  = item
};
function functionDeclaration(item) {
  arr  = item
}
class Test {
  constructor() {  }
  addItem(item){
      arr  = item
  }
}
var _test = new Test()

function functionClass(item) {
  _test.addItem(item);
}

Tests:

function declaration
arr =2 for (let i = 1; i < 10000; i++) { functionDeclaration(i); }
function expression
arr =1 for (let i = 1; i < 10000; i++) { functionExpression(i); }
class
arr =1 for (let i = 1; i < 10000; i++) { _test.addItem(i); }

Run results for: function vs class with external declarations

function declaration

function expression

class