Run results for: comparison between proxy and simple function call on object

Run details:

User agent: Mozilla/5.0 (iPhone; CPU iPhone OS 17_6_1 like Mac OS X) AppleWebKit/605.1.15 (KHTML, like Gecko) Version/17.6 Mobile/15E148 Safari/604.1

Browser: Mobile Safari 17

Operating system: iOS 17.6.1

Device Platform: Mobile

Date tested: one year ago

Benchmark engine: Benchmark.js

getting array

2/s

getting object proxy

2/s

setting array

2/s

getting array proxy

2/s

setting object

1/s

setting array proxy

1/s

getting object

1/s

setting object proxy

1/s

View exact numbers

Test name	Executions per second
✓ getting array	2 Ops/sec
getting object proxy	2 Ops/sec
setting array	2 Ops/sec
getting array proxy	2 Ops/sec
setting object	1 Ops/sec
setting array proxy	1 Ops/sec
getting object	1 Ops/sec
setting object proxy	1 Ops/sec

Script Preparation code:

var o = {}, ar=[];

function set(o, k, v){
  o[k] =v;
}
function get(o, k){
  return o[k];
}

var proxyHandler = {
  set(o,k,v){
    o[k]=v;
    return true;
  },
  get(o,k){return o[k];}
};

var op = new Proxy({}, proxyHandler);
var arp = new Proxy([], proxyHandler);


function randomInt(min, max){
  return Math.floor(Math.random() * (max - min + 1)) + min;
}
function randomString(length){
  var result = '';
  var characters = 'ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789';
  var charactersLength = characters.length;
  for ( var i = 0; i < length; i++ ) {
    result += characters.charAt(Math.floor(Math.random() * charactersLength));
  }
  return result;
}
var keys = [];
for(var i=0; i<20; i++){
  keys.push(randomString(randomInt(2, 10)));
}
var count = 1000000

Tests:

setting array
for(var i=0; i<count; i++){ let i = randomInt(0, 20); set(ar, i, keys[i]); }
setting object
for(var i=0; i<count; i++){ let i = randomInt(0, 20); set(o, keys[i], i); }
setting array proxy
for(var i=0; i<count; i++){ let i = randomInt(0, 20); arp[i] = keys[i]; }
setting object proxy
for(var i=0; i<count; i++){ let i = randomInt(0, 20); op[keys[i]] = i; }
getting array
for(var i=0; i<count; i++){ let i = randomInt(0, 20); get(ar, i); }
getting object
for(var i=0; i<count; i++){ let i = randomInt(0, 20); get(ar, keys[i]); }
getting array proxy
for(var i=0; i<count; i++){ let i = randomInt(0, 20); arp[i]; }
getting object proxy
for(var i=0; i<count; i++){ let i = randomInt(0, 20); op[keys[i]]; }