Benchmark: RegEx.test vs String.includes

Script Preparation code:

var string = "Hello world!";
var regex = /Hello/;

Tests:

RegEx
regex.test(string);
Includes
string.includes("Hello");

Rendered benchmark preparation results:

Suite status: <idle, ready to run>

Previous results

Test case name	Result
RegEx
Includes

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):

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Let's break down the benchmark and its results.

**What is tested?**

The provided JSON represents two individual test cases: `RegEx` and `Includes`. The test cases compare the performance of two approaches to search for the string "Hello" in a given string:

1. **RegEx (Regular Expression)**: This approach uses regular expressions to search for the pattern "Hello" in the string.
2. **String.includes**: This approach uses the built-in `includes` method of JavaScript strings to search for the substring "Hello".

**Options compared**

The two options being compared are:

* Regular Expressions (RegEx)
* String includes

**Pros and Cons:**

1. **Regular Expressions (RegEx)**:
	* Pros:
		+ Can perform complex pattern matching
		+ Can be used for validation, parsing, and data extraction
	* Cons:
		+ Can be slow due to the complexity of patterns
		+ Can lead to security vulnerabilities if not handled properly
2. **String includes**:
	* Pros:
		+ Fast and efficient
		+ Easy to use and understand
	* Cons:
		+ Limited to simple substring matching

**Library used:**

None explicitly mentioned, but it's assumed that JavaScript provides the built-in `includes` method.

**Special JS feature or syntax:**

The benchmark uses JavaScript strings with Unicode characters. No special features or syntax are required for this benchmark.

**Other alternatives:**

If you're looking for alternative methods to search for a substring in a string, some options include:

* **String.indexOf**: Similar to `includes`, but returns the index of the first occurrence, or -1 if not found.
* **Regular expressions (other flavors)**: Other regular expression engines, like .NET's Regex or Java's Pattern, could be used instead.
* **Native APIs**: Depending on the platform and programming language, other native APIs might be available for substring matching.

In summary, this benchmark compares two widely used methods for substring matching in JavaScript strings. Regular Expressions provide more flexibility but can be slower, while `String.includes` is faster but limited to simple matches.

Related benchmarks:

RegEx.test vs String.includes (version: 0)

Comparing performance of: RegEx vs Includes

Created: 3 years ago by: Guest

Jump to the latest result

RegEx

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):