Benchmark: replaceAll native 2023 vs regex replace

Tests:

replace regex
"this is it".replace(/ /g, "+");
replace All
"this is it".replaceAll(" ", "+");

Rendered benchmark preparation results:

Suite status: <idle, ready to run>

Previous results

Test case name	Result
replace regex
replace All

Fastest: N/A

Slowest: N/A

Autogenerated LLM Summary (model llama3.2:3b, generated 25 days ago):

LLMs can make mistakes. Check important info.

Let's break down the provided benchmark JSON and explain what is being tested.

**Benchmark Definition**

The provided `Benchmark Definition` json represents two different approaches to replace characters in a string:

1. `replaceAll native 2023`: This approach uses the native JavaScript `replaceAll()` method, which replaces all occurrences of a pattern with a replacement value.
2. `regex replace`: This approach uses regular expressions (regex) to replace all occurrences of a pattern.

**Options Compared**

The benchmark compares two options for replacing characters in a string:

1. Native JavaScript `replaceAll()` method
2. Regular expression-based replacement

**Pros and Cons**

* **Native JavaScript `replaceAll()` method**:
	+ Pros: Typically faster, more lightweight, and easier to read than regex.
	+ Cons: May not work as expected with certain character sets or edge cases.
* **Regular Expression-Based Replacement**:
	+ Pros: Highly flexible, can handle complex patterns, and is widely supported by browsers.
	+ Cons: Can be slower due to the complexity of the regex engine, may use more memory, and can be harder to read.

**Other Considerations**

When choosing between these two approaches, consider the following:

* **Character Set**: If you need to replace characters from specific character sets (e.g., Unicode), regex might be a better choice.
* **Performance**: If speed is crucial, native JavaScript `replaceAll()` might be more suitable.
* **Code Readability**: If code readability is important, native JavaScript `replaceAll()` is often easier to read than regex.

**Library Usage**

In the provided benchmark, there is no explicit library usage mentioned. However, it's worth noting that modern JavaScript engines often rely on third-party libraries for regular expression processing (e.g., `RegExp` in Node.js or browsers).

**Special JS Feature or Syntax**

There are no special JavaScript features or syntax mentioned in this benchmark.

**Alternatives**

If you want to explore alternative approaches, consider the following:

* **String.prototype.replace()**: Another method for replacing characters in a string.
* **V8's built-in regex engine alternatives**: If you're interested in exploring other regex engines like V8's own implementation.
* **Regular expression libraries**: For more advanced or specialized regex processing, consider using external libraries like `regex-js` or `regex-polyfill`.

In summary, the provided benchmark compares two approaches for replacing characters in a string: native JavaScript `replaceAll()` and regular expression-based replacement. The choice between these options depends on your specific use case, performance requirements, and code readability needs.

Latest run results:

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

User agent: Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/114.0.0.0 Safari/537.36

Browser/OS: Chrome 114 on Linux

View result in a separate tab

Test name	Executions per second
replace regex	5554788.5 Ops/sec
replace All	4337586.0 Ops/sec

Related benchmarks:

replaceAll native 2023 vs regex replace (version: 0)

Comparing performance of: replace regex vs replace All

Created: one year ago by: Guest

Jump to the latest result

replace regex

replace All

Suite status: <idle, ready to run>

Experimental features:

Fastest: N/A

Slowest: N/A

Autogenerated LLM Summary (model llama3.2:3b, generated 25 days ago):