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findIndex/indexOf
(version: 0)
Comparing performance of:
find vs indexof
Created:
3 years ago
by:
Guest
Jump to the latest result
Script Preparation code:
var arr = []; let i = 0; while (i <= 1E5) arr[i] = i++;
Tests:
find
const idx = arr.findIndex(item => item == 1E5);
indexof
const index = arr.indexOf(1E5);
Rendered benchmark preparation results:
Suite status:
<idle, ready to run>
Run tests (2)
Previous results
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Test case name
Result
find
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):
Let's break down the provided JSON benchmark definition and test cases to understand what is being tested. **Benchmark Definition** The provided JSON represents a JavaScript microbenchmarking test case. It defines two different approaches for finding an element in an array: 1. `findIndex`: This method returns the index of the first element in the array that satisfies the provided condition. 2. `indexOf`: This method returns the index of the first occurrence of the specified value in the array. **Script Preparation Code** The script preparation code initializes an empty array `arr` and populates it with values from 0 to 100,000 using a while loop. The purpose of this code is to create a large array for testing the indexing methods. **Html Preparation Code** There is no HTML preparation code provided, which means that the benchmarking test is not dependent on any specific HTML structure or layout. **Individual Test Cases** The benchmark has two individual test cases: 1. `find`: This test case uses the `findIndex` method to find the index of the element with value 100,000 in the prepared array. 2. `indexof`: This test case uses the `indexOf` method to find the index of the element with value 100,000 in the prepared array. **Library and Features** There is no explicit library mentioned in the benchmark definition. However, it's likely that the JavaScript engine being tested (e.g., V8 in Chrome) is using the ECMAScript standard library for these indexing methods. No special JS features or syntax are used in this benchmark. **Pros and Cons of Different Approaches** Here's a brief analysis of the pros and cons of each approach: 1. `findIndex`: * Pros: More efficient than `indexOf` when the array is sorted or has a specific structure, as it can stop searching once the condition is met. * Cons: May be slower for random arrays or unsorted arrays due to its more complex algorithm. 2. `indexOf`: * Pros: Simpler and faster for large arrays with random values, as it uses a linear search algorithm. * Cons: May be slower than `findIndex` when the array is sorted or has a specific structure. **Other Alternatives** If you were to modify this benchmark or create a new one, you might consider alternative approaches or optimizations, such as: 1. Using a different data structure, like a linked list or a trie. 2. Implementing a custom indexing algorithm for faster lookup times. 3. Using parallel processing or concurrent execution to speed up the tests. Keep in mind that these alternatives would require significant changes to the benchmark definition and test code.
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