Benchmark: Object.values, For...in, Object.keys Object.entires

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)

Rendered benchmark preparation results:

Previous results

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Latest run results:

Run details: (Test run date: 8 months ago)

User agent: Mozilla/5.0 (X11; Ubuntu; Linux x86_64; rv:109.0) Gecko/20100101 Firefox/116.0

Browser/OS: Firefox 116 on Ubuntu

Object.values, For...in, Object.keys Object.entires (version: 0)