Benchmark: Js Search - IndexOf vs Includes

Tests:

Index Of
var a = ['hello', 'a', 'bc', 'helloa']; var b = a.indexOf('helloa');
Includez
var a = ['hello', 'a', 'bc', 'helloa']; var b = a.includes('helloa');

Rendered benchmark preparation results:

Suite status: <idle, ready to run>

Previous results

Test case name	Result
Index Of
Includez

Fastest: N/A

Slowest: N/A

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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 benchmark test cases.

**Benchmark Overview**

The test case is comparing two approaches to search for a substring within an array in JavaScript: `indexOf` and `includes`. The goal is to determine which method is faster on average.

**Options Compared**

* `indexOf`: A method that returns the index of the first occurrence of a specified value within an array, or -1 if it's not found.
* `includes`: A method that returns true if an element with the specified value exists in an array, and false otherwise. It does not return the index.

**Pros and Cons**

* `indexOf`:
	+ Pros: Returns the exact index of the found substring, which might be useful for certain applications (e.g., array manipulation).
	+ Cons: May be slower than `includes` due to its additional checks and potential overhead.
* `includes`:
	+ Pros: Generally faster and more concise than `indexOf`.
	+ Cons: Returns a boolean value instead of an index, which might require additional processing.

**Library Used**

Neither `indexOf` nor `includes` uses any external libraries. They are built-in JavaScript methods.

**Special JS Feature/Syntax**

There is no special JavaScript feature or syntax used in this benchmark. The focus is on the performance comparison between two standard methods.

**Other Considerations**

* This benchmark might not accurately represent real-world scenarios, as arrays are typically sparse and elements may be added or removed dynamically.
* Other factors that could affect performance, such as array size, type of data stored, and hardware capabilities, are not considered in this test case.

**Alternative Approaches**

If you need to perform substring searching on an array, consider the following alternatives:

1. **Regular expressions**: Regular expressions (regex) can be used to search for substrings within arrays. While they provide more flexibility than `indexOf` or `includes`, they may also introduce additional overhead and complexity.
2. **For loops**: Basic for loops can be used to iterate through an array and check each element against the target substring. This approach is more explicit but less concise and potentially slower than using built-in methods like `indexOf` or `includes`.
3. **Native libraries**: Depending on your specific use case, you might consider using native libraries like jQuery or other library-specific implementations of substring searching.

Keep in mind that the best approach depends on your specific requirements, data types, and performance considerations.

Related benchmarks:

Js Search - IndexOf vs Includes (version: 0)

Comparing performance of: Index Of vs Includez

Created: 4 years ago by: Guest

Jump to the latest result

Index Of

Includez

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):