Benchmark: Compare performance indexOf, includes, some

Script Preparation code:

var array = ['banana', 'apple', 'orange', 'pineapple', 'cherry', 'tomato', 'raspberry']

Tests:

indexOf
array.indexOf('tomato') !== 1
includes
array.includes('tomato')
some
array.some(v => v === 'tomato')

Rendered benchmark preparation results:

Suite status: <idle, ready to run>

Previous results

Test case name	Result
indexOf
includes
some

Fastest: N/A

Slowest: N/A

Latest run results:

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

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Let's break down the provided JSON and explain what is tested, compared options, pros and cons of each approach, library usage, special JS features or syntax, and other considerations.

**Benchmark Definition**

The benchmark defines three test cases:

1. `array.indexOf('tomato') !== 1`
2. `array.includes('tomato')`
3. `array.some(v => v === 'tomato')`

These tests aim to compare the performance of three different methods in JavaScript: `indexOf`, `includes`, and `some`.

**Options Compared**

The options being compared are:

* `indexOf`: a method that returns the index of the first occurrence of a specified value in an array. If the value is not found, it returns -1.
* `includes`: a method that checks if an element with the specified value exists in an array.
* `some`: a method that returns true if at least one element in an array satisfies the provided condition.

**Pros and Cons of Each Approach**

Here's a brief overview of each approach:

* `indexOf`:
	+ Pros: generally faster than `includes` for searching in arrays. However, it can be slow for large arrays because it iterates through the entire array to find the index.
	+ Cons: returns -1 if the value is not found, which may be undesirable in some cases.
* `includes`:
	+ Pros: more concise and readable than `indexOf`, as it eliminates the need to handle the case where the value is not found. It also returns false immediately when the value is not found.
	+ Cons: generally slower than `indexOf` for searching in arrays, especially for large arrays.
* `some`:
	+ Pros: more concise and readable than using a loop or conditional statement to check if at least one element satisfies the condition.
	+ Cons: can be slower than `includes` because it iterates through the array until it finds an element that matches the condition.

**Library Usage**

There is no explicit library usage in this benchmark. However, some JavaScript engines may include internal libraries or optimizations that could affect the results.

**Special JS Features or Syntax**

None are mentioned in this specific benchmark. However, it's worth noting that `some` uses a syntax similar to a callback function (`v => v === 'tomato'`) which is a common feature in modern JavaScript.

**Other Considerations**

* The use of an array with a large number of elements (7) may skew the results for small arrays. For smaller arrays, other approaches might be more suitable.
* The benchmark does not account for edge cases like empty arrays or null/undefined values.
* The execution counts per second are measured in the latest benchmark result, which provides insight into the performance characteristics of each approach.

**Alternatives**

Other alternatives to these methods could include:

* Using a library like Lodash or Ramda for array operations
* Implementing custom array search algorithms using techniques like binary searching
* Using other JavaScript features like `findIndex` or `forEach` instead of `some`

Keep in mind that the choice of method depends on the specific requirements and constraints of the project.

Related benchmarks:

Compare performance indexOf, includes, some (version: 0)

Compare performance indexOf, includes, some in javascript

Comparing performance of: indexOf vs includes vs some

Created: 3 years ago by: Guest

Jump to the latest result

indexOf

includes

some

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):