Benchmark: Iterate over 2 object with merge 2

Script Preparation code:

var o1 = {};
var o2 = {};

for(var i=0; i<5000; i++) {
  o1[`id${i}`] = {i};
  o1[`id${i}2`] = {i};
}
const out = {}

var assignIn = (key) => {
    out[key] = {}
    Object.assign(out[key], o1[key], o2[key])
}

Tests:

for..in with hasOwnProperty()
for (const key in o1) { if (o1.hasOwnProperty(key)) { assignIn(key) } } for (const key in o2) { if (o2.hasOwnProperty(key)) { assignIn(key) } }
Object.keys() + Array.forEach()
Object.keys(o1) .concat(Object.keys(o2)) .forEach(assignIn)

Rendered benchmark preparation results:

Suite status: <idle, ready to run>

Previous results

Test case name	Result
for..in with hasOwnProperty()
Object.keys() + Array.forEach()

Fastest: N/A

Slowest: N/A

Latest run results:

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Iterate over 2 object with merge 2 (version: 1)

Comparing performance of: for..in with hasOwnProperty() vs Object.keys() + Array.forEach()

Created: 7 years ago by: Registered User

Jump to the latest result

for..in with hasOwnProperty()

Object.keys() + Array.forEach()

Suite status: <idle, ready to run>

Fastest: N/A

Slowest: N/A

No previous run results