Benchmark: Includes vs startsWith

Tests:

Includes
const classname = "t-1" classname.includes("t-1")
StartsWith
const classname = "t-1" classname.startsWith("t-1")

Rendered benchmark preparation results:

Suite status: <idle, ready to run>

Previous results

Test case name	Result
Includes
StartsWith

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.

**Benchmark Overview**

The benchmark is designed to compare two different approaches for checking if a string contains a certain substring: `includes()` and `startsWith()`. Both methods are used to check if a string contains a specific value, but they differ in their behavior when dealing with edge cases.

**Options Compared**

There are only two options being compared:

1. **`includes()` method**: This method checks if the specified substring is present anywhere in the string. It returns `true` as soon as it finds the substring.
2. **`startsWith()` method**: This method checks if the string starts with the specified value. It returns `true` only when the entire string matches the pattern.

**Pros and Cons of Each Approach**

1. **`includes()` Method**
	* Pros:
		+ More efficient for large strings, as it stops checking as soon as it finds a match.
		+ Can be faster for shorter strings.
	* Cons:
		+ May return incorrect results if the substring is not present in the string (e.g., `const classname = "t-1"; classname.includes("z")` returns `false`, even though the substrings are identical).
2. **`startsWith()` Method**
	* Pros:
		+ Returns accurate results, as it only checks for a match at the beginning of the string.
	* Cons:
		+ May be slower for large strings or repeated searches.

**Library Usage**

None of the test cases use any external libraries. The benchmark is focused on comparing the performance of built-in JavaScript methods (`includes()` and `startsWith()`).

**Special JS Feature or Syntax**

There are no special features or syntaxes mentioned in this benchmark. It's a simple comparison between two standard JavaScript methods.

**Other Alternatives**

In addition to the `includes()` and `startsWith()` methods, other alternatives might include:

* Using regular expressions (e.g., ` RegExp.test()`) for more complex pattern matching.
* Implementing custom string searching algorithms for specific use cases.

However, these alternative approaches are not being tested in this benchmark.

**Benchmark Preparation Code**

The provided script preparation code is empty (`"Script Preparation Code": null`), which means that no specific setup or configuration is required to run the benchmarks. The focus is solely on comparing the performance of `includes()` and `startsWith()`.

Related benchmarks:

Includes vs startsWith (version: 0)

Comparing performance of: Includes vs StartsWith

Created: 4 years ago by: Guest

Jump to the latest result

Includes

StartsWith

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):