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Object keys
(version: 0)
Should i use equal(object, {})? Or just Object.keys(object) === 0?
Comparing performance of:
Object keys vs JSON
Created:
5 years ago
by:
Registered User
Go to the latest result
Tests:
Object keys
Object.keys({})
JSON
let object = {} JSON.stringify(object) === JSON.stringify({})
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
JSON
Fastest:
N/A
Slowest:
N/A
Latest run results:
Run details:
(Test run date:
one year ago
)
User agent:
Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/131.0.0.0 Safari/537.36
Browser/OS:
Chrome 131 on Windows
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<iframe src="https://measurethat.net/Embed?id=573747" width="100%" height="500px"></iframe>
Object keys
49.1M/s
JSON
6.1M/s
View exact numbers
Test name
Executions per second
✓
Object keys
49,129,980 Ops/sec
JSON
6,108,752 Ops/sec
Autogenerated LLM Summary
(model
llama3.2:3b
, generated one year ago):
I'd be happy to explain the benchmark being tested and provide insights on the options compared, pros and cons of each approach, and other considerations. **Benchmark Definition** The benchmark definition is a JSON object that describes a specific test case. In this case, there are two test cases: 1. "Object keys": This test case checks whether using `equal(object, {})` or just `Object.keys(object) === 0` is faster. 2. "JSON": This test case checks the performance of serializing an empty object with `JSON.stringify()`. **Options Compared** The benchmark compares two options: 1. **Using `equal()` function**: This function is likely a custom implementation that checks if two objects are equal using some internal logic. The idea behind this approach is to compare the equality of two objects, but it's not a standard way in JavaScript. 2. **Checking `Object.keys(object) === 0`**: This approach simply checks if an object has any keys by comparing the result of `Object.keys()` to 0. If the object is empty, `Object.keys()` will return an empty array, and the comparison will be true. **Pros and Cons** 1. **Using `equal()` function**: * Pros: This approach might provide more accurate results for complex objects with nested properties. * Cons: It's not a standard way in JavaScript, which may make it less reliable or harder to maintain. 2. **Checking `Object.keys(object) === 0`**: * Pros: This approach is simple, fast, and widely supported across browsers and platforms. * Cons: It might not be accurate for objects with nested properties or complex data structures. **Library Used** In the "JSON" test case, the library used is **JSON.stringify()**. `JSON.stringify()` is a built-in JavaScript function that converts an object into a JSON string. The purpose of this library is to serialize the empty object and compare it with another serialization result. **Special JS Feature or Syntax** There are no specific JS features or syntax mentioned in the benchmark definition. However, it's worth noting that `equal()` function might be a custom implementation, which could indicate that there's some special logic or optimization being applied to the test case. **Other Alternatives** If you want to explore alternative approaches for these test cases: 1. For "Object keys", you could also consider using: * `Object.keys(object).length === 0` * A custom implementation using `for...in` loop and checking if any property is present 2. For the "JSON" test case, you could use different serialization libraries like **Lodash's _toString()` function or a custom implementation. Keep in mind that these alternatives might not provide significant performance differences or might introduce additional complexity. I hope this explanation helps you understand the benchmark being tested!
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