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Array IndexOf vs includes
(version: 0)
Comparing performance of:
Includes vs IndexOf
Created:
4 years ago
by:
Guest
Go to the latest result
Script Preparation code:
var array1 = [0,1,3,532,32,3576,745,1235,6432,31265,654,43212,354,4667,875,999,9991,9991,9991,9991,9991,9991,9991,9991,9991,9991,9991,9991,9991,9991,9991,9991,9991,9991,9991,9991,9991,9991,9991,9991,9991,9991,9991,9991,9991,9991,9991,9991,9991,9991,9991,9991,9991,9991,9991,9991,9991,9991,9991,9991,9991,9991,9991,9991,9991,9991,9991,9991,9991,9991,9991,9991,9991,9991,9991,9991,9991,9991,9991,9991,9991,9991,9991,9991,9991,9991,9991,9991,9991,9991,9991,9991,9991,9991,9991,9991,9991,9991,9991,9991,9991,9991,9991,9991,9991,9991,9991,9991,9991,9991,9991,9991,9991,9991,9991,9991,9991,9991,9991,9991,9991,9991,9991,9991,9991,9991,9991,9991,9991,9991,9991,9991,9991,9991,9991,9991,9991,9991,9991,9991,9991,9991,9991,9991,9991,9991,9991,9991,9991,9991,9991,9991,9991,9991,9991,9991,9991,9991,9991,9991,9991,9991,9991,9991,9991,9991,9991,9991,9991,9991,9991,9991]
Tests:
Includes
array1.indexOf(31265) > -1
IndexOf
array1.includes(31265)
Rendered benchmark preparation results:
Suite status:
<idle, ready to run>
Run tests (2)
Previous results
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Test case name
Result
Includes
IndexOf
Fastest:
N/A
Slowest:
N/A
Latest run results:
Run details:
(Test run date:
8 months ago
)
User agent:
Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/142.0.0.0 Safari/537.36
Browser/OS:
Chrome 142 on Windows
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Embed Benchmark Result
<iframe src="https://measurethat.net/Embed?id=621098" width="100%" height="500px"></iframe>
IndexOf
71.3M/s
Includes
68.8M/s
View exact numbers
Test name
Executions per second
✓
IndexOf
71,251,960 Ops/sec
Includes
68,798,944 Ops/sec
Autogenerated LLM Summary
(model
llama3.2:3b
, generated one year ago):
**Overview of the Benchmark** The provided JSON represents a JavaScript microbenchmarking test on MeasureThat.net. The benchmark compares the performance of two methods to check if an element exists in an array: `indexOf` and `includes`. **What is being tested?** Two individual test cases are defined: 1. **Includes**: Verifies if `array1.includes(31265)` returns a boolean value indicating whether 31265 is present in the array. 2. **IndexOf**: Verifies if `array1.indexOf(31265)` returns an index value (or -1 if not found) indicating the position of 31265 in the array. **Options compared** The two methods are compared in terms of their execution time, with the goal of identifying which one is faster for this specific use case. **Pros and Cons of each approach** * **`includes` method** + Pros: - More readable and concise code. - Less prone to off-by-one errors or edge cases. + Cons: - May be slower than `indexOf` due to the overhead of string comparison. * **`indexOf` method** + Pros: - Can return an index value, which might be useful in certain situations. + Cons: - More verbose code. - Prone to off-by-one errors or edge cases if not used carefully. **Library usage** There is no explicit library mentioned in the benchmark definition. However, `array1` is a JavaScript array created using the default `var` syntax, which is a part of the ECMAScript standard. **Special JS feature/syntax** The test does not explicitly use any special JavaScript features or syntax that would require additional explanation. Both methods are widely supported and should work in most modern browsers. **Other alternatives** If you wanted to implement this benchmark yourself, you could create an array `array1` with a large number of elements and then measure the execution time of both `includes` and `indexOf` methods using a timer or profiling tool. You would also need to consider any platform-specific differences in behavior or performance. In JavaScript, alternative approaches for similar use cases might include: * Using `includes()` method on other data structures like strings or sets. * Implementing custom search algorithms for arrays or other data structures. * Using optimized libraries or frameworks that provide faster array searching mechanisms.
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