Benchmark: IndexOf vs Includes in string email

Script Preparation code:

var email = "thisissomeemail@gmail.com"

Tests:

IndexOf
email.indexOf('@')
Includes
email.includes('@')

Rendered benchmark preparation results:

Suite status: <idle, ready to run>

Previous results

Test case name	Result
IndexOf
Includes

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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I'd be happy to help explain what's being tested in this benchmark.

**What is being tested?**

MeasureThat.net is testing the performance difference between two string methods: `indexOf` and `includes`. Both methods are used to search for a specific substring within a larger string. In this case, the test string is an email address (`"thisissomeemail@gmail.com"`).

**Options compared**

The benchmark compares the performance of two options:

1. **`indexOf`**: This method returns the index of the first occurrence of the specified value (in this case, the `@` symbol). If the value is not found, it returns `-1`.
2. **`includes`**: This method returns a boolean indicating whether the string contains the specified value (in this case, the `@` symbol).

**Pros and Cons**

Here are some pros and cons of each approach:

* **`indexOf`**:
	+ Pros: Generally faster than `includes`, especially for large strings, since it uses a linear search algorithm.
	+ Cons: May return incorrect results if the string is modified after calling `indexOf`.
* **`includes`**:
	+ Pros: More convenient and readable, as it returns a boolean value indicating whether the substring is present.
	+ Cons: Generally slower than `indexOf`, especially for large strings, since it uses a linear search algorithm.

**Library usage**

There is no explicit library mentioned in this benchmark. However, both `indexOf` and `includes` are built-in string methods in JavaScript, which means they are implemented by the JavaScript engine itself.

**Special JS feature or syntax**

There is no special JavaScript feature or syntax mentioned in this benchmark. The focus is solely on comparing the performance of two string methods.

**Other alternatives**

If you need to measure the performance of other string methods, some alternatives might include:

* `startsWith()` and `endsWith()`: These methods return booleans indicating whether the string starts with or ends with a specified value, respectively.
* `localeCompare()`: This method returns an integer indicating the relative position of two strings in the sort order for their locale.

Keep in mind that these alternative methods may have different performance characteristics depending on the specific use case and requirements.

Related benchmarks:

IndexOf vs Includes in string email (version: 0)

Comparing performance of: IndexOf vs Includes

Created: 3 years ago by: Guest

Jump to the latest result

IndexOf

Includes

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):