Benchmark: isEqual vs === for strings

HTML Preparation code:

<script src="https://cdn.jsdelivr.net/npm/lodash@4.17.4/lodash.min.js"></script>

Script Preparation code:

window.a = 'something'
window.b = 'something else'

Tests:

isEqual
_.isEqual(a, b)
===
a === b

Rendered benchmark preparation results:

Suite status: <idle, ready to run>

Previous results

Test case name	Result
isEqual
===

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 break down what's being tested on the provided JSON.

**Benchmark Overview**

The benchmark is designed to compare two different ways of checking if two values are equal: using the `===` operator (strict equality) and using the `_isEqual` function from the Lodash library.

**Options Being Compared**

There are two options being compared:

1. **Strict Equality (`===`)**: This checks if both values have the same value, data type, and location in memory.
2. **Lodash's `isEqual` Function**: This uses a more lenient comparison algorithm that checks for deep equality between objects.

**Pros and Cons of Each Approach**

* **Strict Equality (`===`)**
	+ Pros:
		- Faster and more secure (since it checks for both value and data type)
	+ Cons:
		- Can return false positives if the values are similar but not exactly equal
		- Does not handle objects or arrays with complex nested structures
* **Lodash's `isEqual` Function**
	+ Pros:
		- More lenient, allowing for more flexibility in comparing values (e.g., arrays, objects)
	+ Cons:
		- Slower than strict equality due to the additional complexity of the comparison algorithm
		- May return false negatives if the values are not deeply equal

**Lodash Library**

The Lodash library is a popular JavaScript utility library that provides a wide range of functions for tasks like array manipulation, object transformation, and more. In this benchmark, the `_isEqual` function is used to compare two values using a more lenient comparison algorithm.

**Special JS Features/Syntax (None in This Benchmark)**

There are no special JavaScript features or syntax used in this benchmark.

**Other Alternatives**

If you need to compare values in your code, you may also consider using other libraries like:

* `DeepEqual` from the `deep-equal` library
* `eq` from the `fast-json-stamp` library

These alternatives offer similar functionality to Lodash's `_isEqual` function but with different implementations and trade-offs.

**Benchmark Preparation Code**

The provided preparation code sets up two variables, `window.a` and `window.b`, with string values. The HTML preparation code includes a script tag that loads the Lodash library.

**Individual Test Cases**

There are two test cases:

1. **`isEqual`**: This benchmark compares the result of calling `_isEqual(a, b)` using Lodash's comparison function.
2. **`===`**: This benchmark compares the result of calling `a === b`.

The provided latest benchmark results show that the Chrome 73 browser executes the strict equality (`===`) benchmark faster than the Lodash-based `isEqual` benchmark, with execution rates of approximately 1:16.

Related benchmarks:

isEqual vs === for strings (version: 0)

Comparing performance of: isEqual vs ===

Created: 6 years ago by: Guest

Jump to the latest result

isEqual

===

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):