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include test22
(version: 2)
Comparing performance of:
Object.keys includes vs in searchCondition
Created:
3 years ago
by:
Registered User
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Script Preparation code:
var searchCondition = {brandName: null, displayCategoryNumber: null, searchKeyword: null};
Tests:
Object.keys includes
if (Object.keys(searchCondition).includes('searchKeyword')) { console.log('if ("searchKeyword" in searchCondition)'); }
in searchCondition
if ('searchKeyword' in searchCondition) { console.log('if ("searchKeyword" in searchCondition)'); }
Rendered benchmark preparation results:
Suite status:
<idle, ready to run>
Run tests (2)
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Test case name
Result
Object.keys includes
in searchCondition
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 benchmark and its test cases. **Benchmark Overview** The benchmark measures the performance difference between using `includes()` and checking if an object has a specific property using the `in` operator in JavaScript. **Script Preparation Code** The script preparation code defines an object `searchCondition` with three properties: `brandName`, `displayCategoryNumber`, and `searchKeyword`. These properties are initialized with null values. **Html Preparation Code** Since there is no HTML preparation code, we can assume that the benchmark is running in a headless browser environment or using a tool like Node.js to execute the JavaScript code. **Test Cases** There are two test cases: 1. **"Object.keys includes"**: This test case checks if `Object.keys()` returns an array with the specified property (`searchKeyword`) when used with the `includes()` method. 2. **"in searchCondition"**: This test case checks if the `in` operator returns true when checking if `searchKeyword` is a property of the `searchCondition` object. **Library and Features** There are no libraries mentioned in the benchmark definition or individual test cases. However, it's likely that the benchmark uses a JavaScript engine or runtime environment like V8 (used by Chrome) to execute the code. The only notable feature in these test cases is the use of template literals (`\r\n` is used to escape newline characters). This is a modern JavaScript feature introduced in ECMAScript 2015 (ES6). **Pros and Cons** Using `includes()` with `Object.keys()` can be faster than using the `in` operator because it: * Avoids the overhead of iterating over the object's properties * Uses a more efficient algorithm to check for membership However, `includes()` is not available in older JavaScript engines like V8 (used by Chrome 109) which uses an older version of JavaScript. Using the `in` operator provides more flexibility and can be used with older JavaScript engines. However, it may be slower than using `includes()` due to the iteration overhead. **Other Alternatives** If you want to test this benchmark on a different JavaScript engine or runtime environment, you could consider using: * V8 (used by Chrome) version 109 or later for a more modern JavaScript experience * SpiderMonkey (used by Firefox) for a different JavaScript engine * Node.js or other JavaScript runtimes that support the `includes()` method Keep in mind that these alternatives may require modifications to the benchmark code to ensure compatibility. In conclusion, the benchmark measures the performance difference between using `includes()` with `Object.keys()` and checking if an object has a specific property using the `in` operator. The test cases demonstrate this difference on modern and older JavaScript engines.
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