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JS typed strict find vs indexOf
(version: 0)
Comparing performance of: strict Array.find vs Array.indexOf
Comparing performance of:
strict Array.find vs Array.indexOf
Created:
3 years ago
by:
Registered User
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Script Preparation code:
var arr = []; var i = 0; while (i <= 1E5) arr[i]=i++;
Tests:
strict Array.find
const item = arr.find(item => item === 1E5);
Array.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
strict Array.find
Array.indexOf
Fastest:
N/A
Slowest:
N/A
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Autogenerated LLM Summary
(model
llama3.2:3b
, generated one year ago):
Let's break down the provided benchmark and explain what is being tested, compared, and analyzed. **Benchmark Overview** The benchmark compares the performance of two approaches for finding an element in an array: 1. `strict Array.find()` 2. `Array.indexOf()` **Options Compared** The benchmark uses two different options to find the desired element: 1. **`strict Array.find()`**: This method returns the first element in the array that satisfies the provided test function. 2. **`Array.indexOf()`**: This method returns the index of the first occurrence of the specified value, or -1 if not found. **Pros and Cons** Here's a brief summary of the pros and cons of each approach: **strict Array.find():** Pros: * More concise and expressive code * Reduces the chance of off-by-one errors Cons: * May throw an error if no element matches the test function (unlike `Array.indexOf()` which returns -1) * Requires a test function to be provided, which may add overhead for simple searches **Array.indexOf():** Pros: * More forgiving and robust, as it always returns an index or -1 * Does not require a test function, making it suitable for simple searches Cons: * Less concise code * May lead to off-by-one errors if not used carefully **Other Considerations** Both approaches have their own trade-offs. `strict Array.find()` is generally preferred when the search criteria are complex or need to be expressed in a declarative way, while `Array.indexOf()` is better suited for simple searches where speed and brevity are more important. **Library and Syntax Used** Neither approach relies on any additional libraries or syntax features beyond standard JavaScript. However, it's worth noting that some older browsers may not support `strict Array.find()`, so the benchmark results may not be directly comparable across all browsers. **Test Case Analysis** The provided test cases demonstrate a simple search for an element with value 1E5 (100,000) in an array of increasing values. The test cases use the same script preparation code to generate a large array, ensuring that any differences in performance are due solely to the difference between `strict Array.find()` and `Array.indexOf()`.
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