Benchmark: endsWith vs - MeasureThat.net

Tests:

Regex
"this is a test" === "test"
endsWith
"this is a test".endsWith("test")

Rendered benchmark preparation results:

Suite status: <idle, ready to run>

Previous results

Test case name	Result
Regex
endsWith

Fastest: N/A

Slowest: N/A

Latest run results:

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

User agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/136.0.0.0 Safari/537.36

Browser/OS: Chrome 136 on Mac OS X 10.15.7

View result in a separate tab

Test name	Executions per second
Regex	196738320.0 Ops/sec
endsWith	105878568.0 Ops/sec

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

LLMs can make mistakes. Check important info.

Let's dive into the world of MeasureThat.net and explore what's being tested in this benchmark.

**Benchmark Overview**

The provided JSON represents a benchmark that compares the performance of two string comparison methods: `===` (strict equality) and `.endsWith()` (a method to check if a string ends with another). The test is designed to measure which approach is faster.

**Script Preparation Code**

There is no Script Preparation Code specified, which means the test script will be generated automatically by MeasureThat.net.

**Html Preparation Code**

There is also no Html Preparation Code provided. This suggests that the HTML structure for the benchmark may not require any special configuration or setup.

**Individual Test Cases**

We have two individual test cases:

1. `"this is a test" === "test"`: This test case uses strict equality (`===`) to compare two strings. The `===` operator checks whether both values are equal and also of the same type.
2. `"this is a test".endsWith("test")`: This test case uses the `.endsWith()` method to check if the string `"this is a test"` ends with the suffix `"test"`. The `.endsWith()` method returns a boolean value indicating whether the original string ends with the specified suffix.

**Pros and Cons of Approaches**

1. **Strict Equality (`===`)**
	* Pros: Fast, reliable, and suitable for most use cases.
	* Cons: Can be slower than other methods if the strings are not equal or if type coercion is involved (e.g., comparing a number with a string).
2. **`.endsWith()` Method**
	* Pros: Specifically designed for this purpose, can be faster due to optimized implementation in modern browsers.
	* Cons: Requires explicit method call and may have performance issues if the method is not implemented correctly.

**Library/Functionality Used**

In both test cases, there are no external libraries or functions being used. The `===` operator is a built-in JavaScript operator, and the `.endsWith()` method is part of the String prototype in modern browsers.

**Special JS Feature/Syntax (None)**

There's no special JavaScript feature or syntax being tested in this benchmark.

**Other Alternatives**

If you wanted to test other string comparison methods, you could consider adding more test cases, such as:

* Using `String.prototype.includes()` to check if a substring is present.
* Implementing your own custom string comparison function using regular expressions (e.g., `RegExp.test()`).
* Comparing strings using different character encodings or normalization forms.

Keep in mind that MeasureThat.net already provides a wide range of benchmark templates and options, so you may not need to create your own custom benchmarks.

Related benchmarks:

endsWith vs (version: 0)

Comparing performance of: Regex vs endsWith

Created: 3 years ago by: Guest

Jump to the latest result

Regex

endsWith

Suite status: <idle, ready to run>

Fastest: N/A

Slowest: N/A

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