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JSON.stringify vs Naive deepEqual
(version: 0)
Comparing performance of:
JSON.stringify vs Naive deepEqual
Created:
4 years ago
by:
Guest
Go to the latest result
Tests:
JSON.stringify
const data1 = { section: { id: 'test', }, block: { id: 'test', } } const data2 = { section: { id: 'testing', }, block: undefined } function isEqual(a, b) { return JSON.stringify(a) === JSON.stringify(b); } isEqual(data1, data2);
Naive deepEqual
const data1 = { section: { id: 'test', }, block: { id: 'test', } } const data2 = { section: { id: 'testing', }, block: undefined } function isEqual(a, b) { if (a != b) { return false; } if (a == b) { return true; } const hasDifferentProperties = Object.entries(a).some( ([key, value]) => { if (value == null && b[key] != null) { return true; } if (value != null && b[key] == null) { return true; } if (typeof value === 'Object') { return Object.entries(value).some(([k, v]) => v != b[key][k]); } return value != b[key]; }, ); } isEqual(data1, data2);
Rendered benchmark preparation results:
Suite status:
<idle, ready to run>
Run tests (2)
Previous results
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Test case name
Result
JSON.stringify
Naive deepEqual
Fastest:
N/A
Slowest:
N/A
Latest run results:
Run details:
(Test run date:
3 months ago
)
User agent:
Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/146.0.0.0 Safari/537.36
Browser/OS:
Chrome 146 on Linux
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Embed Benchmark Result
<iframe src="https://measurethat.net/Embed?id=628456" width="100%" height="500px"></iframe>
Naive deepEqual
144.0M/s
JSON.stringify
9.6M/s
View exact numbers
Test name
Executions per second
✓
Naive deepEqual
144,004,544 Ops/sec
JSON.stringify
9,561,759 Ops/sec
Autogenerated LLM Summary
(model
llama3.2:3b
, generated one year ago):
Let's dive into the world of JavaScript microbenchmarks! **Benchmark Definition** The benchmark definition is a JSON object that provides metadata about the test case. In this case, it's empty, but we can infer some information from the individual test cases. **Individual Test Cases** There are two test cases: 1. **JSON.stringify**: This test case uses a custom implementation of `isEqual` function to compare two objects using `JSON.stringify`. The test creates two objects, `data1` and `data2`, which have similar properties but different values. 2. **Naive deepEqual**: This test case uses a naive implementation of equality comparison between two objects. It checks for shallow equalities (e.g., `a == b`) and then recursively checks for deeper equalities. **Options Compared** The two test cases are comparing the performance of: * Using `JSON.stringify` to compare objects * A custom implementation of `isEqual` function for deep object comparison **Pros and Cons** Here's a brief analysis of each approach: * **JSON.stringify**: This approach has some pros: + Easy to implement and understand. + Can handle complex object structures. + Provides a way to compare objects using a standardized format (JSON string). However, it also has some cons: + Inefficient for large objects due to the overhead of serializing and parsing JSON strings. + May not work correctly for cyclic references or objects with non-serializable properties. * **Naive deepEqual**: This approach has its own set of pros and cons: + Can handle complex object structures more efficiently than `JSON.stringify`. + More accurate than `JSON.stringify` for detecting subtle differences between objects. However, it also has some drawbacks: + More complex to implement and understand. + May be slower than `JSON.stringify` due to the recursive nature of the implementation. **Library** There is no explicit library mentioned in the benchmark definition. However, the `isEqual` function in the **Naive deepEqual** test case uses a custom implementation that can be compared to existing libraries like Lodash's `deepEqual` or other custom implementations. **Special JS Features/Syntax** Neither of the test cases uses any special JavaScript features or syntax. They are relatively straightforward and focus on comparing object equality using different approaches. **Alternatives** If you're looking for alternatives to these benchmarked approaches, here are a few options: * **Lodash's `deepEqual`**: A popular library that provides an efficient and accurate implementation of deep object comparison. * **Immer.js's `isEqual` function**: Another widely-used library that offers a fast and reliable way to compare objects. * **Manual implementations**: Depending on your specific use case, you might be able to implement a custom equality comparison function using techniques like recursive checking or diffing algorithms. In summary, the benchmark is comparing two approaches for object equality comparison: `JSON.stringify` and a naive implementation of `isEqual`. The choice between these approaches depends on your specific requirements, performance constraints, and personal preference.
Related benchmarks
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Lodash.isEqual vs JSON.stringify Equality Comparison for Shallow Object of Strings.
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