Benchmark: lodash.keys vs Object.keys

HTML Preparation code:

<script src="https://cdn.jsdelivr.net/lodash/4.16.0/lodash.min.js"></script>

Script Preparation code:

var value = {a: 30310, b: 100303, c: 3040494};

Tests:

lodash.keys
_.keys(value)
native
Object.keys(value)

Historical Performance Data aggregated from 59 community runs

Desktop Results:

Chrome 52 runs

native

10.5M/s

lodash.keys

9.4M/s

Fastest: native (1.1x faster)

View exact numbers

✓ native: 10,517,689 ops/sec
• lodash.keys: 9,436,317 ops/sec

Firefox 7 runs

native

20.3M/s

lodash.keys

14.7M/s

Fastest: native (1.4x faster)

View exact numbers

✓ native: 20,340,090 ops/sec
• lodash.keys: 14,677,226 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
lodash.keys
native

Fastest: N/A

Slowest: N/A

Latest run results:

Run details: (Test run date: 11 months ago)

User agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10.15; rv:128.0) Gecko/20100101 Firefox/128.0

Browser/OS: Firefox 128 on Mac OS X 10.15

View result in a separate tab

native

11.8M/s

lodash.keys

8.2M/s

View exact numbers

Test name	Executions per second
✓ native	11,820,202 Ops/sec
lodash.keys	8,155,154 Ops/sec

Autogenerated LLM Summary (model llama3.2:3b, generated one year ago):

LLMs can make mistakes. Check important info.

Let's dive into the world of JavaScript microbenchmarks on MeasureThat.net!

**What is being tested?**

The provided JSON represents two benchmark test cases:

1. `_.keys(value)` - This tests the performance of the `_` function from Lodash, specifically its `keys()` method, which returns an array of the object's property names.
2. `Object.keys(value)` - This tests the native JavaScript `Object.keys()` method, which achieves similar functionality to the `_` function.

**Options compared:**

The two test cases compare the performance of using the Lodash library (`_.keys`) versus the native JavaScript `Object.keys()` method. Both methods aim to provide an efficient way to retrieve an array of property names from an object.

**Pros and Cons:**

### Native JavaScript `Object.keys()`

Pros:

* Built-in, no external dependency
* Efficient implementation in V8 (the JavaScript engine used by Chrome)
* Lightweight

Cons:

* May not work as expected for certain types of objects (e.g., arrays with functions as values)

### Lodash `_keys()` method

Pros:

* More convenient and expressive API
* Works with a wider range of object types, including those with functions as values
* Can be used to get property names from other data structures like strings and objects

Cons:

* External dependency (Lodash library)
* May introduce additional overhead due to the extra function call

**Library:**

The Lodash library is a popular utility belt for JavaScript developers. It provides a wide range of functions for various tasks, such as array manipulation, object iteration, and more.

**Special JS feature or syntax:**

There are no special features or syntaxes used in this benchmark that require specific knowledge to understand.

**Other alternatives:**

If you need an alternative to `Object.keys()` or `_keys()`, you could consider:

* Using the `for...in` loop to iterate over object properties
* Utilizing other libraries like `property-inspector` or `obj-keys`
* Implementing your own solution using a simple loop and `Object.prototype.hasOwnProperty.call()`

Keep in mind that these alternatives may have different performance characteristics, trade-offs, and use cases compared to the native JavaScript methods and Lodash's `_keys()` method.

For most use cases, the choice between `Object.keys()` and `_keys()` will depend on personal preference, familiarity with the library, and specific requirements. If you're looking for a lightweight and efficient solution, `Object.keys()` is likely a good choice. If you need more expressiveness or support for a broader range of object types, Lodash's `_keys()` method might be a better fit.

lodash.keys vs Object.keys (version: 0)

Comparing performance of: `lodash.keys vs native`

Created: 9 years ago by: Guest

Go to the latest result

lodash.keys

native

Historical Performance Data aggregated from 59 community runs

Desktop Results:

Chrome 52 runs

Firefox 7 runs

Suite status: <idle, ready to run>

Fastest: N/A

Slowest: N/A

Autogenerated LLM Summary (model llama3.2:3b, generated one year ago):

lodash.keys vs Object.keys (version: 0)

Comparing performance of: lodash.keys vs native

Created: 9 years ago by: Guest

Go to the latest result

lodash.keys

native

Historical Performance Data aggregated from 59 community runs

Desktop Results:

Chrome 52 runs

Firefox 7 runs

Suite status: <idle, ready to run>

Fastest: N/A

Slowest: N/A

Autogenerated LLM Summary (model llama3.2:3b, generated one year ago):

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Comparing performance of: `lodash.keys vs native`