Benchmark: find vs some vs every

Script Preparation code:

var array = [
  {id:1, name:'test'},
  {id:2, name:'test'},
  {id:3, name:'test'},
  {id:4, name:'test'},
  {id:5, name:'test'},
  {id:6, name:'test'},
  {id:7, name:'test'},
  {id:8, name:'test'},
  {id:9, name:'test'},
  {id:10, name:'test'},
];

Tests:

some
array.some(item => item.id === 10);
every
!array.every(item => item.id !== 10)
find
array.find(item => item.id === 10);

Rendered benchmark preparation results:

Suite status: <idle, ready to run>

Previous results

Test case name	Result
some
every
find

Fastest: N/A

Slowest: N/A

Autogenerated LLM Summary (model llama3.2:3b, generated 27 days ago):

LLMs can make mistakes. Check important info.

**Overview of the Benchmark**

The provided benchmark compares the performance of three different methods for finding an element in an array: `some()`, `every()`, and `find()`.

**Tested Options**

1. **`array.some(item => item.id === 10)`**: This method returns `true` as soon as it finds an element in the array that satisfies the condition.
2. **`!array.every(item => item.id !== 10)`**: This method is a negation of `every()`, which means it will return `false` as soon as it finds an element that does not satisfy the condition. However, since the condition is negated, it will actually find the first matching element and return `true`.
3. **`array.find(item => item.id === 10)`**: This method returns the first element in the array that satisfies the condition.

**Pros and Cons of Each Approach**

1. **`some()`**:
	* Pros: Can stop iterating as soon as it finds a match, which can lead to better performance if the array is large and only one element matches.
	* Cons: May not be suitable for arrays where no elements satisfy the condition, resulting in an empty result.
2. **`every()`** (with negation):
	* Pros: Can stop iterating as soon as it finds a mismatch, which can lead to better performance if the array is large and only one element matches.
	* Cons: May not be suitable for arrays where no elements satisfy the condition, resulting in an empty result. Also, the negation makes it less intuitive than `some()` or `find()`.
3. **`find()`**:
	* Pros: Intuitive and easy to read, returns the first matching element.
	* Cons: May not be suitable for arrays where no elements satisfy the condition, resulting in `undefined`.

**Library Usage**

None of the benchmark options explicitly use a library.

**Special JS Feature or Syntax**

There are no special JavaScript features or syntax used in this benchmark. The methods are standard and widely supported by most modern browsers.

**Other Alternatives**

For finding an element in an array, other alternatives to `some()`, `every()`, and `find()` include:

* Using a traditional loop with indexing (e.g., `for (var i = 0; i < array.length; i++)`).
* Using `Array.prototype.indexOf()` or `Array.prototype.lastIndexOf()`.
* Using `Array.prototype.reduce()` to find the first matching element.

However, these alternatives are generally less efficient and more verbose than using `some()`, `every()`, and `find()`.

Latest run results:

Run details: (Test run date: yesterday)

User agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/131.0.0.0 Safari/537.36

Browser/OS: Chrome 131 on Windows

View result in a separate tab

Test name	Executions per second
some	8417843.0 Ops/sec
every	8561255.0 Ops/sec
find	7965835.0 Ops/sec

Related benchmarks:

find vs some vs every (version: 0)

Comparing performance of: some vs every vs find

Created: 6 years ago by: Guest

Jump to the latest result

some

every

find

Suite status: <idle, ready to run>

Experimental features:

Fastest: N/A

Slowest: N/A

Autogenerated LLM Summary (model llama3.2:3b, generated 27 days ago):