Benchmark: mybencmark1121222

Script Preparation code:

var url = "https://normalsozluk.com/b/normal-sozluk-yazarlarindan-ingilizce-mizah-paylasimlari--262427?page=40";
var match = "normalsozluk.com/yazar/";
var startswith = 0;
var indexof = 0;

Tests:

startswith
for (let i = 0; i < 10000; ++i) { if (url.startsWith(match)) { ++startswith; } }
indexof
for (let i = 0; i < 10000; ++i) { if (url.indexOf(match) != -1) { ++indexof; } }

Rendered benchmark preparation results:

Suite status: <idle, ready to run>

Previous results

Test case name	Result
startswith
indexof

Fastest: N/A

Slowest: N/A

Latest run results:

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

LLMs can make mistakes. Check important info.

I'll explain what's being tested in the provided JSON benchmark, comparing different approaches for each test case.

**Benchmark Overview**

The benchmark is designed to measure the performance of two string matching methods: `startsWith` and `indexOf`. The tests are designed to search for a specific substring (`"normalsozluk.com/yazar/"`) within a longer URL string. The goal is to determine which method is faster in terms of executions per second.

**Benchmark Definition JSON**

The benchmark definition json contains two properties:

*   `Script Preparation Code`: This code snippet defines variables that will be used in the test cases, including URLs and substring matches.
*   `Html Preparation Code`: This field is empty, indicating that no HTML preparation is required for this benchmark.

**Individual Test Cases**

There are two individual test cases:

1.  **`startswith`**:
    *   Benchmark Definition: A `for` loop iterating 10,000 times, checking if the URL starts with a specific substring using the `startsWith()` method.
    *   The code increments a counter (`startswith`) whenever a match is found.

2.  **`indexof`**:
    *   Benchmark Definition: Similar to the previous test case, but it uses the `indexOf()` method instead of `startsWith()`. The code increments another counter (`indexof`) for each occurrence of the substring in the URL.

**Pros and Cons of Different Approaches**

1.  **`startsWith()`**: This approach checks if a string starts with a specified substring. It returns `true` if it does, or `false` otherwise.
    *   Pros:
        *   Typically faster than `indexOf()`, as it only needs to traverse the initial characters of the string.
    *   Cons:
        *   Does not guarantee finding all occurrences, as it stops checking once a match is found.

2.  **`indexOf()`**: This method searches for a specified substring within a given string and returns its position (0-indexed).
    *   Pros:
        *   Guarantees finding all occurrences of the substring.
    *   Cons:
        *   Generally slower than `startsWith()`, especially if only the first occurrence is needed.

**Library Usage**

In this benchmark, no libraries are explicitly mentioned. However, some built-in JavaScript methods and data types are used, such as strings (`url`), variables (`startswith` and `indexof`), and control structures (`for` loop).

**Special JS Features or Syntax**

No special features or syntax are being tested in this benchmark. The focus is on the string matching algorithms themselves.

**Other Alternatives**

If you want to explore alternative string searching methods, consider:

1.  **Regexp**: Regular expressions provide a more powerful way to search for patterns within strings.
2.  **Array.prototype.some() or Array.prototype.every()**: While not specifically designed for string searching, these methods can be used with array-like data structures (e.g., arrays of characters) to find occurrences.

In conclusion, this benchmark aims to demonstrate the performance differences between `startsWith()` and `indexOf()` in JavaScript. Understanding the pros and cons of each approach will help you choose the best method for your specific use case.

Related benchmarks:

mybencmark1121222 (version: 0)

Comparing performance of: startswith vs indexof

Created: 2 years ago by: Guest

Jump to the latest result

startswith

indexof

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):