Benchmark: Split vs Regex (for parsing window.location.search)

Script Preparation code:

//window.location.
var search = "?test=test2&test3=test4&test5=test6";

Tests:

Splitting
var params = {}; var query = search.substring(1); var paramStrs = query.split('&'); for (var paramStr of paramStrs) { var pair = paramStr.split('='); params[decodeURIComponent(pair[0])] = decodeURIComponent(pair[1]); }
Regex
var params = Object.fromEntries(new Map(Array.from(window.location.search.matchAll(/[&\?]([^=]+)\=([^\&]+)/g)).map(match => [decodeURIComponent(match[1]), decodeURIComponent(match[2])])));

Rendered benchmark preparation results:

Suite status: <idle, ready to run>

Previous results

Test case name	Result
Splitting
Regex

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 benchmark and explain what's being tested, compared options, pros and cons, library usage, special JavaScript features, and alternative approaches.

**Benchmark Overview**

The benchmark measures the performance of two approaches for parsing a URL query string: using the `split()` method or regular expressions (regex).

**Options Compared**

1. **Split() Method**: This approach uses the `split()` method to split the query string into individual parameters.
2. **Regex Approach**: This approach uses regex to extract individual parameters from the query string.

**Pros and Cons of Each Approach**

1. **Split() Method**
	* Pros:
		+ Simple and easy to understand.
		+ Can be implemented in a few lines of code.
	* Cons:
		+ May not work correctly for all valid input formats (e.g., URL-encoded parameters).
		+ Performance might be slower due to the overhead of string manipulation.
2. **Regex Approach**
	* Pros:
		+ More robust and flexible, handling various input formats.
		+ Can provide better performance, as regex can be optimized for specific use cases.
	* Cons:
		+ May be more complex to understand and implement.
		+ Requires a good understanding of regex syntax.

**Library Usage**

There is no explicit library usage mentioned in the benchmark definition or test cases. However, the `matchAll()` method used in the regex approach is part of the JavaScript API (ECMAScript 2017).

**Special JavaScript Features**

None are explicitly mentioned or used in this benchmark. The test cases rely solely on standard JavaScript features.

**Benchmark Preparation Code**

The preparation code for each test case consists of:

1. A sample query string (`search`) defined using string concatenation.
2. An empty `Html` section, indicating no HTML-related setup is required.

**Individual Test Cases**

The two test cases are identical in terms of the provided benchmark definition and script preparation code. However, they differ in the implementation approach:

1. **Splitting**: Uses the `split()` method to split the query string into individual parameters.
2. **Regex**: Uses regex to extract individual parameters from the query string.

**Latest Benchmark Result**

The latest results show that the Split() Method performs better than the Regex Approach, with higher executions per second (1105912.75 vs 542223.625).

Related benchmarks:

Split vs Regex (for parsing window.location.search) (version: 0)

Working version of Split vs Regex

Comparing performance of: Splitting vs Regex

Created: 3 years ago by: Guest

Jump to the latest result

Splitting

Regex

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):