Benchmark: array find vs lodash find vs object lookup

HTML Preparation code:

<script type="text/javascript" src="https://cdnjs.cloudflare.com/ajax/libs/lodash.js/4.17.5/lodash.core.js"></script>

Script Preparation code:

var size = 1000;
var arr = [size];
var obj = {};
var objTree = {sub:{}};

for (var i = 0; i < size; i++) {
  	let entry={
        id: 'id' + i,
        value: 'value' + i
    };
    arr.push(entry);
    obj['id' + i] = entry;
    objTree.sub['id' + i] = entry;
}

Tests:

array find
var b = arr.find(item => item.id === 'id500');
lodash array _.find
var b = _.find(arr, {id: "id500"});
object lookup
var b = obj.id500;
object lookup 2
var b = obj['id500'];
object lookup 3
var b = obj.id500;

Rendered benchmark preparation results:

Suite status: <idle, ready to run>

Previous results

Test case name	Result
array find
lodash array _.find
object lookup
object lookup 2
object lookup 3

Fastest: N/A

Slowest: N/A

Latest run results:

No previous run results

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

LLMs can make mistakes. Check important info.

Let's dive into the explanation of what is tested on the provided JSON that represents the benchmark.

**Benchmark Overview**

The benchmark tests three different approaches to find an element in an array or object:

1. **Array Find**: Using the `find()` method on an array to retrieve a specific element.
2. **Lodash Array _.find**: Using the `_` (Lodash) library's `_.find()` function to find an element in an array.
3. **Object Lookup**: Directly accessing an object property using dot notation or bracket notation.

**Options Compared**

The benchmark compares the execution time of these three approaches:

* **Array Find**: Uses the `find()` method on the `arr` array.
* **Lodash Array _.find**: Uses the `_` library's `_.find()` function to find an element in the `arr` array.
* **Object Lookup**: Directly accesses the `id500` property of the `obj` object using dot notation (`obj.id500`) or bracket notation (`obj['id500']`).

**Pros and Cons of Each Approach**

1. **Array Find**:
	* Pros: Simple, concise, and efficient for arrays.
	* Cons: May not be as readable or maintainable as other approaches, especially for complex conditions.
2. **Lodash Array _.find**:
	* Pros: Provides a reusable function for finding elements in arrays, making it easier to maintain and reuse.
	* Cons: Requires including the Lodash library, which may add unnecessary overhead for simple use cases.
3. **Object Lookup**:
	* Pros: Can be more readable and concise than using `find()` or `_`. Directly accessing properties can be faster if the property exists.
	* Cons: May not work correctly if the object is dynamic or if the key is not a string.

**Library Used**

In this benchmark, the Lodash library is used for its `_.find()` function. Lodash provides a set of utility functions that make common tasks easier and more efficient.

**Special JavaScript Features/Syntax**

None are mentioned in the provided code snippets.

**Other Alternatives**

If you don't want to use Lodash or the `find()` method, you could also use other approaches, such as:

* Using `Array.prototype.findIndex()` (ECMAScript 2015+)
* Implementing a custom loop to iterate through the array
* Using a library like jQuery or a polyfill for older browsers

Keep in mind that these alternatives might have different performance characteristics and may not be as concise or readable as the original approaches.

In conclusion, this benchmark provides a simple yet informative comparison of three common approaches to find an element in an array or object. It helps developers understand the trade-offs between simplicity, readability, and performance when working with JavaScript arrays and objects.

Related benchmarks:

array find vs lodash find vs object lookup (version: 0)

Comparing performance of: array find vs lodash array _.find vs object lookup vs object lookup 2 vs object lookup 3

Created: 3 years ago by: Guest

Jump to the latest result

array find

lodash array _.find

object lookup

object lookup 2

object lookup 3

Suite status: <idle, ready to run>

Fastest: N/A

Slowest: N/A

No previous run results

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