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Includes vs Some vs IndexOf
(version: 0)
Comparing performance of:
Includes vs Some vs IndexOf
Created:
6 years ago
by:
Guest
Jump to the latest result
Script Preparation code:
var arr = []; arr.push('A'); arr.push('B'); arr.push('C'); arr.push('D'); arr.push('E'); arr.push('F'); arr.push('G'); arr.push('H'); arr.push('I');
Tests:
Includes
var tempResult = arr.includes(v => v === 'E');
Some
var tempResult = arr.some(v => v === 'E');
IndexOf
var tempResult = arr.indexOf('E') > -1;
Rendered benchmark preparation results:
Suite status:
<idle, ready to run>
Run tests (3)
Previous results
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Test case name
Result
Includes
Some
IndexOf
Fastest:
N/A
Slowest:
N/A
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Autogenerated LLM Summary
(model
llama3.2:3b
, generated one year ago):
**Benchmark Overview** The provided benchmark compares the performance of three methods to find an element in an array: `includes`, `some`, and `indexOf`. The benchmark is run on a fixed input array with 12 elements. **Options Compared** * **`includes(v => v === 'E')`**: This method uses the arrow function syntax to define a function that checks if an element is equal to `'E'`. It returns a boolean value indicating whether the element is found or not. * **`arr.some(v => v === 'E')`**: This method uses the `some()` array method, which returns a boolean value indicating whether at least one element in the array satisfies the provided condition. * **`arr.indexOf('E') > -1`**: This method uses the `indexOf()` array method to find the index of the specified element. If the element is found, it returns its index; otherwise, it returns `-1`. **Pros and Cons of Each Approach** * **`includes(v => v === 'E')`**: + Pros: concise syntax, easy to read. + Cons: may have performance overhead due to the arrow function creation and invocation. * **`arr.some(v => v === 'E')`**: + Pros: can be faster than `includes()` for large arrays since it stops iterating as soon as a match is found. + Cons: may not be as readable as `includes()`, and the condition must be a function expression. * **`arr.indexOf('E') > -1`**: + Pros: well-established method with good performance, easy to understand. + Cons: returns an index value instead of a boolean result. **Library** There is no library explicitly mentioned in the benchmark. However, some browsers may have built-in polyfills or implementations for these methods. **Special JS Features** * **Arrow Function Syntax**: used in `includes(v => v === 'E')` and `arr.some(v => v === 'E')`. This feature allows defining small, single-expression functions using the `=>` syntax. * **Template Literals**: not explicitly mentioned, but the HTML Preparation Code does not include any template literal usage. **Other Considerations** * The benchmark only tests these three methods on a fixed input array. In practice, you may need to test different scenarios and edge cases for each method. * The benchmark results are provided in UAP (User Agent Platform) string format, which includes information about the browser, device platform, operating system, and other metadata. **Alternatives** If you're interested in exploring alternative methods or optimizations, here are a few options: * **Using `find()` instead of `includes()`**: `find()` can be faster for large arrays since it returns the first element that matches the condition, whereas `includes()` returns a boolean value. * **Using `filter()` instead of `some()`**: `filter()` can be used to find all elements that match a condition, which might be useful in some scenarios. * **Optimizing `indexOf()`**: Some browsers have optimized implementations for `indexOf()`, such as using a binary search algorithm. However, these optimizations may not be available on all platforms or versions. Keep in mind that the optimal approach depends on your specific use case and requirements.
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