Benchmark: Two Arrays to Object #3

Script Preparation code:

keys = ["a","b","c","d"];
values = [1,2,3,4];

Tests:

forEach #1
const ob = {}; keys.forEach((key, i)=>ob[key]=values[i]);
fromEntries and map #1
const ob = Object.fromEntries( keys.map((key, i)=>[key, values[i]]) );
Object.assign and map #1
const ob = Object.assign( ...keys.map((k, i) => ({[k]: values[i]})) );
reduce #1
const ob = keys.reduce( (o, k, i) => ({...o, [k]: values[i]}), {} );
for
const ob = {}; for (let key=0; key<keys.length; key++) { ob[keys[key]] = values[key]; }
forEach #2
const ob = {}; const fn = (key, i)=>ob[key]=values[i]; keys.forEach(fn);
fromEntries and map #2
const fn = (key, i)=>[key, values[i]]; const ob = Object.fromEntries(keys.map(fn));
Object.assign and map #2
const fn = (k, i) => ({[k]: values[i]}); const ob = Object.assign( ...keys.map(fn) );
reduce #2
const fn = (o, k, i) => ({...o, [k]: values[i]}); const ob = keys.reduce(fn, {});

Rendered benchmark preparation results:

Previous results

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Latest run results:

Run details: (Test run date: one year ago)

User agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:104.0) Gecko/20100101 Firefox/104.0

Browser/OS: Firefox 104 on Windows

Two Arrays to Object #3 (version: 2)