Run results for: Filter null/undefined/empty string key values from an Object

Run details:

User agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/122.0.0.0 Safari/537.36

Browser: Chrome 122

Operating system: Mac OS X 10.15.7

Device Platform: Desktop

Date tested: 2 years ago

Using Filter and Reduce

217K/s

Using For Loop

191K/s

View exact numbers

Test name	Executions per second
✓ Using Filter and Reduce	217,022 Ops/sec
Using For Loop	191,207 Ops/sec

Tests:

Using For Loop
const obj = { a: '', b: null, c: 'dog'}; for (let propName in obj) { if ( obj[propName] === null || obj[propName] === undefined || obj[propName] === '' ) { delete obj[propName]; } } // result: {c: 'dog'} console.log(obj)
Using Filter and Reduce
const obj = { a: '', b: null, c: 'dog'}; const newObj = Object.entries(obj) .filter(([key, value]) => !!value) .reduce((acc, [key, value]) => { acc[key] = value; return acc; }, {}); // result: {c: 'dog'} console.log(newObj);