Benchmark: (Draft 1) indexOf vs Regex

Tests:

indexOf
var hostname = 'fastshop.com.br'; var result = (hostname.indexOf('webapp2-qa') == 0 || hostname.indexOf('webapp2-dev') == 0 || hostname.indexOf('dev.fastshop') == 0) ? true : undefined;
Regex
var hostname = 'fastshop.com.br'; var result = /^webapp2-(qa|dev|develop)\.|dev.fastshop\./g.test(hostname) ? true : undefined;
indexOf 1
var hostname = 'fastshop.com.br'; var result = (hostname.indexOf('webapp2-qa') == 0) ? true : undefined;

Rendered benchmark preparation results:

Suite status: <idle, ready to run>

Previous results

Test case name	Result
indexOf
Regex
indexOf 1

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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**Overview of the Benchmark**

The provided benchmark compares three different approaches to check if a hostname contains specific substrings: `indexOf`, regular expressions (`Regex`), and a simplified version of `indexOf` without using a library.

**Benchmark Definition JSON Explanation**

The benchmark definition JSON contains metadata about the benchmark, including:

* `Name`: The name of the benchmark.
* `Description`: An empty string indicating that no description is provided.
* `Script Preparation Code` and `Html Preparation Code`: Empty strings indicating that no preparation code is required for either JavaScript or HTML.

**Individual Test Cases**

There are three test cases:

1. **Test Case 1: "indexOf"`
	* The benchmark definition script uses the `indexOf` method to check if the hostname contains specific substrings.
	* The test case checks if the hostname starts with one of the specified substrings using multiple `indexOf` calls.
2. **Test Case 2: "Regex"`
	* The benchmark definition script uses a regular expression to check if the hostname contains specific substrings.
	* The regular expression `/^webapp2-(qa|dev|develop)\\.|dev\.fastshop\\./g.test(hostname)` checks for the presence of the specified substrings at the start of the string.
3. **Test Case 3: "indexOf 1"`
	* This test case is similar to Test Case 1, but without using a library.

**Libraries and Special Features**

* None of the benchmark definitions use external libraries or special JavaScript features.

**Comparison of Approaches**

The three approaches differ in their performance and efficiency:

* **Test Case 1: "indexOf"`**: This approach uses multiple `indexOf` calls to check for different substrings. It is likely to be slower due to the repeated checks.
* **Test Case 2: "Regex"`**: This approach uses a regular expression, which can be faster than using `indexOf` multiple times. However, regular expressions can also lead to performance issues if not optimized correctly.
* **Test Case 3: "indexOf 1"`**: This is similar to Test Case 1 but without using a library. It may have similar performance characteristics.

**Pros and Cons**

* **Approach 1 (Test Case 1): "indexOf"**
	+ Pros: Easy to understand and implement.
	+ Cons: Slow due to repeated checks.
* **Approach 2 (Test Case 2): "Regex"`
	+ Pros: Can be faster than multiple `indexOf` calls, but requires careful optimization.
	+ Cons: May lead to performance issues if not optimized correctly.
* **Approach 3 (Test Case 3): "indexOf 1"`
	+ Pros: Similar to Test Case 1 but without using a library.
	+ Cons: May have similar performance characteristics.

**Alternative Approaches**

Other approaches to check for the presence of substrings in hostnames include:

* Using `startsWith` method instead of `indexOf`.
* Using `includes` method (available in modern browsers).
* Optimizing regular expressions for better performance.
* Using a dedicated library or module, such as `hostname-utils`, which provides optimized functions for working with hostnames.

Related benchmarks:

(Draft 1) indexOf vs Regex (version: 0)

Comparing performance of: indexOf vs Regex vs indexOf 1

Created: 4 years ago by: Guest

Jump to the latest result

indexOf

Regex

indexOf 1

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):