Run results for: object looping

Run details:

User agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/134.0.0.0 Safari/537.36 Edg/134.0.0.0

Browser: Chrome 134

Operating system: Windows

Device Platform: Desktop

Date tested: one year ago

values

16K/s

keys for

10K/s

for in

8K/s

View exact numbers

Test name	Executions per second
✓ values	16,447 Ops/sec
keys for	9,907 Ops/sec
for in	7,634 Ops/sec

Script Preparation code:

var a = {};

for (let i = 0; i < 1000; i++) {
	var key = 'adjaksdnmas'+i;	
  	a[key] = {
    	id: key,
      	prop1: true,
      	pro2: 'asdäöasdlas',
     	prop3: [1, 23, 42342, 523423]
    };
}

Tests:

values
var t = Object.values(a)
for in
var t = []; for (var key in a) { if (a.hasOwnProperty(key)) { t.push(a[key]); } }
keys for
var t = []; var keys = Object.keys(a) var length = keys.length; for (var j; j < length; j++) { t.push(a[keys[j]]); }