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Test for getting only one
(version: 0)
Comparing performance of:
Object keys vs Simple
Created:
3 years ago
by:
Guest
Jump to the latest result
Script Preparation code:
var obj = { 'a': 1, 'b': 1, 'c': 1, 'd': 1, 'e': 1, 'f': 1, 'g': 1 };
Tests:
Object keys
for (var i=10000; i > 0; i--) { Object.keys(obj).forEach(key => { if(key == 'e'){ console.log(key); } }); }
Simple
for (var i=10000; i > 0; i--) { console.log(obj.e); }
Rendered benchmark preparation results:
Suite status:
<idle, ready to run>
Run tests (2)
Previous results
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Test case name
Result
Object keys
Simple
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 dive into the world of JavaScript microbenchmarks on MeasureThat.net. **Benchmark Definition** The provided JSON represents a benchmark definition, which is a set of instructions that outlines how to prepare and run a JavaScript test case. The `Script Preparation Code` section specifies the initial setup for the test, while the `Html Preparation Code` section (which is empty in this case) would typically contain HTML code to render the test environment. In this example, the script preparation code defines an object `obj` with multiple properties. This object will be used as a data source for the benchmark tests. **Options Compared** The two individual test cases compare different approaches to retrieve specific properties from the `obj` object: 1. **"Object keys"`**: This test case iterates through all properties of the `obj` object using `Object.keys()` and checks if each property is equal to `'e'`. If it is, it logs the property name to the console. 2. **"Simple"`**: This test case simply logs the value of the property `'e'` directly from the `obj` object. **Pros and Cons** * **"Object keys"`**: + Pros: This approach ensures that all properties with a specific value are retrieved, even if they don't start with `'e'`. + Cons: This approach is slower because it iterates through all properties, which can lead to slower performance. * **"Simple"`**: + Pros: This approach is faster because it directly accesses the desired property without iteration. + Cons: If the property doesn't exist in the `obj` object, this test case will throw an error or return undefined. **Library and Purpose** There are no libraries explicitly mentioned in the benchmark definition. However, the use of `Object.keys()` suggests that the benchmark is using a JavaScript built-in method to iterate through object properties. **Special JS Feature/Syntax (None)** Since there are no special features or syntax used in this benchmark, I won't comment on them. **Other Alternatives** If you wanted to optimize these tests for performance, you could consider the following alternatives: 1. Use a Map data structure instead of an object to store properties with their values. 2. Use `hasOwnProperty()` method instead of `===` operator for property comparison. 3. Consider using WebAssembly or other low-level languages for benchmarking purposes. Keep in mind that these alternatives might not provide significant performance improvements and should be evaluated on a case-by-case basis. I hope this explanation helps you understand the benchmark tests on MeasureThat.net!
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