Benchmark: Split vs Regex with execute

Script Preparation code:

var testString = "test::measdadsad-asdasdsad.ifasdflkdsf-aa"

Tests:

Splitting
var values = testString.split("::"); var value1 = values[0]; var value_part2 = values[1].split('.'); var value2 = value_part2[0]; var value3 = value_part2[1];
Regex
var regex = /(?<space>[a-z]{1,})\:\:(?<area_name>[^.]{1,})\.(?<entity_name>[^.]{1,})/; var groups = regex.exec(testString); var value1 = groups.space; var value2 = groups.area_name; var value3 = groups.entity_name;

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:

Run details: (Test run date: one year ago)

User agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:133.0) Gecko/20100101 Firefox/133.0

Browser/OS: Firefox 133 on Windows

View result in a separate tab

Test name	Executions per second
Splitting	6648762.0 Ops/sec
Regex	5569662.5 Ops/sec

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

LLMs can make mistakes. Check important info.

**Overview of the Benchmark**

The provided benchmark measures the performance difference between two approaches: splitting a string using the `split()` method and regular expressions (regex) to extract specific substrings from the same string.

**Approaches Compared**

1. **Splitting**: This approach uses the `split()` method, which is a built-in JavaScript function that splits a string into an array of substrings based on a specified separator.
2. **Regex**: This approach uses regular expressions (regex) to match and extract specific substrings from the input string.

**Pros and Cons of Each Approach**

1. **Splitting**
	* Pros:
		+ Easy to use and understand
		+ Fast execution time, especially for simple patterns
	* Cons:
		+ Limited flexibility and customization options
		+ May not work well with complex or nested patterns
2. **Regex**
	* Pros:
		+ Highly flexible and customizable
		+ Can handle complex and nested patterns
	* Cons:
		+ Steeper learning curve due to the complexity of regex syntax
		+ May be slower than splitting for simple cases

**Library Used**

In this benchmark, no external library is used. The `split()` method and regular expressions are built-in JavaScript functions.

**Special JS Features/Syntax**

None mentioned in the provided code snippets.

**Benchmark Preparation Code**

The preparation code creates a test string with multiple substrings separated by specific characters (`::` and `.`, which have different escaping rules).

**Other Alternatives**

For more complex or performance-critical string manipulation tasks, other alternatives to splitting and regex include:

1. **String.prototype.match()**: A method similar to regex, but with a simpler syntax.
2. **String.prototype.replace()**: A method that can be used to extract substrings by replacing parts of the original string with an empty string.
3. **Dom manipulation libraries like jQuery or React**: For more complex DOM manipulation tasks, alternative libraries may be preferred over splitting and regex.

It's worth noting that the choice of approach depends on the specific requirements of the project, such as performance, readability, and maintainability.

Related benchmarks:

Split vs Regex with execute (version: 0)

Comparing performance of: Splitting vs Regex

Created: 2 years ago by: Guest

Jump to the latest result

Splitting

Regex

Suite status: <idle, ready to run>

Fastest: N/A

Slowest: N/A

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