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some vs findIndex (Array prototype methods)-1e6
(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 <= 1E6) arr[i] = i++;
Tests:
Array.prototype.some
const rt = arr.some(item => item === 1E6-123);
Array.prototype.findIndex
const rt = arr.findIndex(item => item === 1E6-123);
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/537.36 (KHTML, like Gecko) Chrome/125.0.0.0 Safari/537.36
Browser/OS:
Chrome 125 on Mac OS X 10.15.7
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Embed Benchmark Result
<iframe src="https://measurethat.net/Embed?id=526452" width="100%" height="500px"></iframe>
Array.prototype.some
161/s
Array.prototype.findIndex
160/s
View exact numbers
Test name
Executions per second
✓
Array.prototype.some
161 Ops/sec
Array.prototype.findIndex
160 Ops/sec
Autogenerated LLM Summary
(model
llama3.2:3b
, generated one year ago):
Let's break down the provided JSON data to understand what is being tested. **Benchmark Definition** The benchmark defines two test cases: 1. `some` method: This method returns `true` if at least one element in the array satisfies the condition, or `false` if no elements satisfy it. 2. `findIndex` method: This method returns the index of the first element that satisfies the condition, or -1 if no elements satisfy it. **Script Preparation Code** The script preparation code generates an array `arr` with 1 million elements, starting from 0 and incrementing by 1 for each element. ```javascript var arr = []; var i = 0; while (i <= 1E6) { arr[i] = i++; } ``` This code creates a large array that can be used to test the performance of the `some` and `findIndex` methods. **Comparison** The benchmark compares the execution time of these two methods: * `Array.prototype.some` * `Array.prototype.findIndex` **Options Compared** Two main options are compared: 1. **Using `some` method**: This approach returns a boolean value indicating whether at least one element satisfies the condition. 2. **Using `findIndex` method**: This approach returns the index of the first element that satisfies the condition, or -1 if no elements satisfy it. **Pros and Cons** Here are some pros and cons of each approach: * Using `some` method: + Pros: Simple to implement, easy to read. + Cons: Returns a boolean value, which may not be necessary for all use cases. May be slower than `findIndex` if the condition is computationally expensive. * Using `findIndex` method: + Pros: Returns an index, which can be useful in some scenarios. Can be faster than `some` if the condition is computationally expensive. + Cons: Returns an index, not a boolean value. May require additional processing to handle cases where no elements satisfy the condition. **Library** The benchmark uses the Array prototype methods, specifically `Array.prototype.some()` and `Array.prototype.findIndex()`. These methods are built-in JavaScript methods that allow you to perform common array operations. * `Array.prototype.some()`: Returns a boolean value indicating whether at least one element in the array satisfies the provided callback function. * `Array.prototype.findIndex()`: Returns the index of the first element in the array that satisfies the provided callback function, or -1 if no elements satisfy it. **Special JS Feature/Syntax** There is no special JavaScript feature or syntax used in this benchmark. The code uses standard JavaScript syntax and built-in methods. **Other Alternatives** If you need to measure the performance of other array operations, you can consider using the following alternatives: * `Array.prototype.includes()`: Returns a boolean value indicating whether an element with the specified value exists in the array. * `Array.prototype.indexOf()`: Returns the index of the first element that satisfies the provided callback function, or -1 if no elements satisfy it. * `Array.prototype.lastIndexOf()`: Returns the index of the last element that satisfies the provided callback function, or -1 if no elements satisfy it. Keep in mind that these methods may have different performance characteristics than `some` and `findIndex`, so you should test them separately to determine which one is best for your use case.
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