Run results for: Object.values, For...in, Object.keys Object.entires

Run details:

User agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:93.0) Gecko/20100101 Firefox/93.0

Browser: Firefox 93

Operating system: Windows

Device Platform: Desktop

Date tested: 3 years ago

Script Preparation code:

var a = { a: 1, b:2, c:3, d:4, e: 5, f: 6 }

Tests:

For ... in length test
let sum = 0; for (var x in a ) { sum++; }
Object.keys length test
Object.keys(a).length
Object.values length test
Object.values(a).length
Object.entries length test
Object.entries(a).length
For In Reduce test
let sum = 0; for (var x in a ) { sum += a[x] }
Object.keys Reduce test
Object.keys(a).reduce((prev, curr) => { var sum = prev + a[curr]; return sum; }, 0)
Object.values Reduce test
Object.values(a).reduce((prev, curr) => { return prev + curr; }, 0);
Object.entries reduce test
Object.entries(a).reduce((prev, curr) => { return prev + curr[1] }, 0)