Benchmark: indexOf/includes

Script Preparation code:

var ssp = ["dfp", "pb","adx", "yan-RTB"]

Tests:

indexOf
ssp.indexOf("dfp") > -1
includes
ssp.includes("dfp")

Rendered benchmark preparation results:

Suite status: <idle, ready to run>

Previous results

Test case name	Result
indexOf
includes

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 benchmark and analyze what's being tested.

**Benchmark Definition**

The benchmark is designed to test two different methods for searching for a specific value within an array: `indexOf` and `includes`. The arrays in question are defined in the "Script Preparation Code": `var ssp = [\"dfp\", \"pb\",\"adx\", \"yan-RTB\"]`.

**Options Compared**

The benchmark is comparing the performance of two methods:

1. **`indexOf`**: This method returns the index of the first occurrence of a specified value within an array. If the value is not found, it returns -1.
2. **`includes`**: This method checks if an array includes a specific value and returns `true` or `false`.

**Pros and Cons**

*   **`indexOf`**:
    *   Pros: Can be faster for large arrays since it only searches until the first occurrence of the value is found, stopping early.
    *   Cons: Returns -1 if not found, which may not always be desirable. Also, it can be less efficient than `includes` for small arrays.
*   **`includes`**:
    *   Pros: More concise and easier to read, as it returns a boolean value directly. It's also more efficient for small arrays since it only needs to check the first element.
    *   Cons: May be slower for large arrays due to its linear search nature.

**Library Usage**

The `includes` method is likely using the built-in JavaScript method with the same name, which checks if an array includes a specific value. No additional libraries are required for this test case.

**Special JS Feature/Syntax**

There's no special JavaScript feature or syntax being used in this benchmark that's not standard.

**Alternatives**

If you wanted to test these methods using different approaches:

*   **Use `Array.prototype.includes()` and `Array.prototype.indexOf()`**: These are the modern methods for checking if an array includes a value and finding its index, respectively. They provide more flexibility than `includes` and return values that can be used in various scenarios.
*   **Use custom loop or algorithm**: Instead of relying on built-in methods, you could implement your own loops or algorithms to search for the value within the array. This would allow you to test specific optimization techniques or corner cases.

For example, using `Array.prototype.includes()` and `Array.prototype.indexOf()`:

```javascript
function includes(array, target) {
    return array.includes(target);
}

function indexOf(array, target) {
    return array.indexOf(target);
}
```

Keep in mind that this would add overhead to the test case but provides more control over the implementation.

Related benchmarks:

indexOf/includes (version: 0)

Comparing performance of: indexOf vs includes

Created: 5 years ago by: Guest

Jump to the latest result

indexOf

includes

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):