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Run results for:
Object.assign vs spread vs _.extend
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Embed
Embed Benchmark Result
<iframe src="https://measurethat.net/Embed?id=611171" width="100%" height="500px"></iframe>
Run details:
User agent:
Mozilla/5.0 (X11; Ubuntu; Linux x86_64; rv:139.0) Gecko/20100101 Firefox/139.0
Browser:
Firefox 139
Operating system:
Ubuntu
Device Platform:
Desktop
Date tested:
one year ago
Benchmark engine:
Benchmark.js
Object.assign
24.0M/s
_.extend
24.0M/s
spread operator
17.8M/s
View exact numbers
Test name
Executions per second
✓
Object.assign
23,983,258 Ops/sec
_.extend
23,966,352 Ops/sec
spread operator
17,754,642 Ops/sec
HTML Preparation code:
<script src="https://underscorejs.org/underscore-min.js"></script>
Tests:
Object.assign
var params = { b:"hello", c: true, d:7 }; var other = Object.assign({ a: 2 }, params);
spread operator
var params = { b:"hello", c: true, d:7 }; var other = { a: 2, ...params };
_.extend
var params = { b:"hello", c: true, d:7 }; var other = _.extend({ a: 2 }, params);