Toggle navigation
MeasureThat
.net
Create a benchmark
Tools
Feedback
Feature Requests
FAQ
Register
Log In
Run results for:
Object.assign vs spread vs _.extend on big data
Go to the benchmark
Embed
Embed Benchmark Result
<iframe src="https://measurethat.net/Embed?id=562103" width="100%" height="500px"></iframe>
Run details:
User agent:
Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/130.0.0.0 Safari/537.36
Browser:
Chrome 130
Operating system:
Mac OS X 10.15.7
Device Platform:
Desktop
Date tested:
one year ago
Benchmark engine:
Benchmark.js
Object.assign
10.1M/s
spread operator
1.1M/s
_.extend
5K/s
View exact numbers
Test name
Executions per second
✓
Object.assign
10,065,764 Ops/sec
spread operator
1,123,083 Ops/sec
_.extend
4,843 Ops/sec
HTML Preparation code:
<script src="https://underscorejs.org/underscore-min.js"></script>
Script Preparation code:
var params = Array(10000).fill().map((_, i) => i).reduce((acc, v) => { console.log(v) acc[v] = {vafsd: v}; return acc }, {});
Tests:
Object.assign
var other = Object.assign(params);
spread operator
var other = { ...params };
_.extend
var other = _.extend({ a: 2 }, params);