Benchmark: Underscore vs native

HTML Preparation code:

<script src="https://cdnjs.cloudflare.com/ajax/libs/underscore.js/1.9.0/underscore.js"></script>

Script Preparation code:

  var data = _.range(10000).map(function(i) {
    return {
      counter: i
    }
  });
  
  function isOdd(num) {
    return num % 2 === 1;
  }
  
  function square(num) {
    return num * num;
  }
  
  function lessThanThreeDigits(num) {
    return num.toString().length < 3;
  }

Tests:

Underscore
var result = _.chain(data) .map(item => item.counter) .filter(isOdd) .map(square) .filter(lessThanThreeDigits) .value();
Native
var result = data.map(item => item.counter) .filter(isOdd) .map(square) .filter(lessThanThreeDigits)

Historical Performance Data aggregated from 13 community runs

Desktop Results:

Chrome 13 runs

Native

3K/s

Underscore

2K/s

Fastest: Native (1.1x faster)

View exact numbers

✓ Native: 2,771 ops/sec
• Underscore: 2,476 ops/sec

Results show median performance across all community submissions. Run this benchmark yourself to verify on your device.

Rendered benchmark preparation results:

Suite status: <idle, ready to run>

Previous results

Test case name	Result
Underscore
Native

Fastest: N/A

Slowest: N/A

Latest run results:

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

User agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/137.0.0.0 Safari/537.36

Browser/OS: Chrome 137 on Mac OS X 10.15.7

View result in a separate tab

Native

3K/s

Underscore

3K/s

View exact numbers

Test name	Executions per second
✓ Native	3,300 Ops/sec
Underscore	3,086 Ops/sec

Underscore vs native (version: 4) Benchmark.js

Comparing performance of: `Underscore vs Native`

Created: 7 years ago by: Registered User

Go to the latest result

Underscore

Native

Historical Performance Data aggregated from 13 community runs

Desktop Results:

Chrome 13 runs

Suite status: <idle, ready to run>

Fastest: N/A

Slowest: N/A

Underscore vs native (version: 4) Benchmark.js

Comparing performance of: Underscore vs Native

Created: 7 years ago by: Registered User

Go to the latest result

Underscore

Native

Historical Performance Data aggregated from 13 community runs

Desktop Results:

Chrome 13 runs

Suite status: <idle, ready to run>

Fastest: N/A

Slowest: N/A

Related benchmarks

Comparing performance of: `Underscore vs Native`