Run results for: object emptyness big object

Run details:

User agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/131.0.0.0 Safari/537.36

Browser: Chrome 131

Operating system: Mac OS X 10.15.7

Device Platform: Desktop

Date tested: one year ago

Object.keys

75.0M/s

for in loop

65.6M/s

View exact numbers

Test name	Executions per second
✓ Object.keys	74,973,112 Ops/sec
for in loop	65,644,712 Ops/sec

HTML Preparation code:

<!--your preparation HTML code goes here-->

Script Preparation code:

/*your preparation JavaScript code goes here
To execute async code during the script preparation, wrap it as function globalMeasureThatScriptPrepareFunction, example:*/
async function globalMeasureThatScriptPrepareFunction() {
    // This function is optional, feel free to remove it.
    // await someThing();
}

let abc = {
	a: 1,
	b: 2,
	c: 'a big string',
  	d: {
      e: 123312,
      f: {
        g: 'big object'
      }
    }
}

Tests:

Object.keys
Object.keys(abc).length === 0
for in loop
for (let prop in abc) { return abc.hasOwnProperty(prop) }

Run results for: object emptyness big object

test object emptyness with a big object

Object.keys

for in loop