Benchmark: Js Search -Stri - MeasureThat.net

Tests:

Index Of
var a = 'hello#a#bc#helloa'; var b = a.indexOf('helloa') > -1;
Includes
var a = 'hello#a#bc#helloa'; var b = a.includes('helloa') > -1;

Rendered benchmark preparation results:

Suite status: <idle, ready to run>

Previous results

Test case name	Result
Index Of
Includes

Fastest: N/A

Slowest: N/A

Latest run results:

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Autogenerated LLM Summary (model llama3.1:latest, generated one year ago):

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Let's break down the provided JSON data and explain what each part represents.

**Benchmark Definition**
The benchmark definition is a high-level description of the test case, including its name, description, script preparation code, and HTML preparation code. In this case, it's very minimal with just a name "Js Search -Stri" and no further details.

**Individual Test Cases**

There are two individual test cases:

1. **Index Of**
	* Benchmark Definition: This contains the JavaScript code for the test case.
	* The code creates a string `a` with multiple values separated by `#`. Then, it checks if the value `'helloa'` is present in the string using the `indexOf()` method.
2. **Includes**
	* Benchmark Definition: Similar to the previous one, but this time, it uses the `includes()` method instead of `indexOf()` to check for the presence of `'helloa'` in the string.

**Library Used:** None

**Special JS Features or Syntax:**

* **String.indexOf()**: This is a built-in JavaScript method that returns the index of the first occurrence of a specified value within a string. If the value is not found, it returns `-1`.
* **String.includes()**: Another built-in JavaScript method (introduced in ECMAScript 2015) that returns `true` if the string contains the specified value, and `false` otherwise.

**Pros/Cons of Different Approaches:**

The main difference between these two methods is how they handle substring searching:

* **indexOf():**
	+ Pros:
		- It's a built-in method available in older browsers.
		- It returns the index of the found value, which can be useful for other operations.
	+ Cons:
		- It's case-sensitive and may return incorrect results if you're searching for a substring that's part of another string (e.g., `'helloa'` is not `indexOf('HelloA')`).
* **includes():**
	+ Pros:
		- Introduced in newer browsers, it provides better performance.
		- Case-insensitive search by default (you can specify the second argument to make it case-sensitive if needed).

**Other Considerations:**

When choosing between `indexOf()` and `includes()`, consider:

* If you're targeting older browsers that don't support `includes()`, use `indexOf()`.
* For better performance, especially when searching large strings or repeated searches, `includes()` is the way to go.
* Be aware of case-sensitivity differences and adjust your search accordingly.

**Alternatives:**

If you need more advanced substring searching capabilities, consider using a library like:

* **lodash.string**: A string utility library that offers various methods for manipulating strings, including substring searching.
* **string-search**: A dedicated JavaScript library for substring searching with improved performance and flexibility.

Related benchmarks:

Js Search -Stri (version: 0)

Comparing performance of: Index Of vs Includes

Created: 3 years ago by: Guest

Jump to the latest result

Index Of

Includes

Suite status: <idle, ready to run>

Fastest: N/A

Slowest: N/A

No previous run results

Autogenerated LLM Summary (model llama3.1:latest, generated one year ago):