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some vs findIndex (Array prototype methods)
(version: 0)
Measuring which is faster
Comparing performance of:
Array.prototype.some vs Array.prototype.findIndex
Created:
2 years ago
by:
Guest
Go to the latest result
Script Preparation code:
var arr = []; var i = 0; while (i <= 1E8) arr[i] = i++;
Tests:
Array.prototype.some
const rt = arr.some(item => item === 1E7);
Array.prototype.findIndex
const rt = arr.findIndex(item => item === 1E7);
Rendered benchmark preparation results:
Suite status:
<idle, ready to run>
Run tests (2)
Previous results
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Test case name
Result
Array.prototype.some
Array.prototype.findIndex
Fastest:
N/A
Slowest:
N/A
Latest run results:
Run details:
(Test run date:
2 years ago
)
User agent:
Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/605.1.15 (KHTML, like Gecko) Version/17.5 Safari/605.1.15
Browser/OS:
Safari 17 on Mac OS X 10.15.7
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Embed Benchmark Result
<iframe src="https://measurethat.net/Embed?id=526442" width="100%" height="500px"></iframe>
Array.prototype.findIndex
154/s
Array.prototype.some
90/s
View exact numbers
Test name
Executions per second
✓
Array.prototype.findIndex
154 Ops/sec
Array.prototype.some
90 Ops/sec
Autogenerated LLM Summary
(model
llama3.2:3b
, generated one year ago):
Let's break down the provided JSON and explain what is being tested, compared, and the pros/cons of different approaches. **Benchmark Definition** The benchmark definition represents a JavaScript function that performs some operation on an array. In this case, there are two functions: 1. `Array.prototype.some()`: This function returns `true` if at least one element in the array passes the test implemented by its `callback` parameter. 2. `Array.prototype.findIndex()`: This function returns the index of the first element in the array that passes the test implemented by its `callback` parameter. **Options being compared** The benchmark is comparing two approaches: 1. **Using `some()`**: This approach uses the `some()` method to iterate through the array and check for a condition. 2. **Using `findIndex()`**: This approach uses the `findIndex()` method to find the index of the first element that meets a certain condition. **Pros and cons** * **Using `some()`**: + Pros: Generally faster, as it only needs to iterate through the array once and can stop early if the callback returns `false`. + Cons: Returns `true` or `false`, depending on whether at least one element passes the test. If no elements pass, it returns `false`. This might not be suitable for all use cases. * **Using `findIndex()`**: + Pros: Returns the index of the first element that meets the condition, which can be useful in some scenarios. + Cons: Returns `-1` if no elements meet the condition. It also has to iterate through the entire array. **Library usage** There is no explicit library mentioned in the benchmark definition or options being compared. However, both `some()` and `findIndex()` are built-in methods of the Array prototype. **Special JS feature/syntax** None mentioned. Now, let's consider other alternatives: * **Using a loop**: Instead of using `some()` or `findIndex()`, you could use a traditional loop to iterate through the array. This would likely be slower than both of the built-in methods. * **Using `forEach()` with `break`**: You could use `forEach()` and break out of the loop as soon as the condition is met. This would have similar performance characteristics to using `some()`, but might not be as concise. Keep in mind that the best approach depends on the specific use case and requirements of your application.
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find vs findIndex (Array prototype methods)
find vs indexOf (Array prototype methods)
find vs findIndex (Array prototype methods) - using objects
some vs findIndex (Array prototype methods)-1e6
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