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_.isEqual vs toString() vs JSON.stringify
(version: 0)
Test on isEqual performance
Comparing performance of:
_.isEqual vs toString() vs JSON.stringify
Created:
7 years ago
by:
Guest
Go to the latest result
HTML Preparation code:
<script src="https://cdn.jsdelivr.net/npm/lodash@4.17.4/lodash.min.js"></script>
Script Preparation code:
window.foo = ['cat', 'dog', 'bird']; window.bar = ['cat', 'dog', 'bird'];
Tests:
_.isEqual
_.isEqual(window.foo, window.bar)
toString()
window.foo.toString() === window.bar.toString();
JSON.stringify
JSON.stringify(window.foo) === JSON.stringify(window.bar);
Rendered benchmark preparation results:
Suite status:
<idle, ready to run>
Run tests (3)
Previous results
Fork
Test case name
Result
_.isEqual
toString()
JSON.stringify
Fastest:
N/A
Slowest:
N/A
Latest run results:
Run details:
(Test run date:
5 months ago
)
User agent:
Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/605.1.15 (KHTML, like Gecko) Version/26.2 Safari/605.1.15
Browser/OS:
Safari 26 on Mac OS X 10.15.7
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Embed
Embed Benchmark Result
<iframe src="https://measurethat.net/Embed?id=625300" width="100%" height="500px"></iframe>
_.isEqual
15.0M/s
toString()
10.7M/s
JSON.stringify
6.6M/s
View exact numbers
Test name
Executions per second
✓
_.isEqual
14,990,284 Ops/sec
toString()
10,730,706 Ops/sec
JSON.stringify
6,640,653 Ops/sec
Autogenerated LLM Summary
(model
llama3.2:3b
, generated one year ago):
**Benchmark Overview** The provided JSON represents a JavaScript microbenchmarking test created on MeasureThat.net. The benchmark compares the performance of three different approaches: `_.isEqual` (a function from the Lodash library), `toString()`, and `JSON.stringify()`. **Options Compared** 1. **_.isEqual**: A function from the Lodash library that checks for deep equality between two objects or arrays. 2. **toString()**: A built-in JavaScript method that converts an object to a string representation. 3. **JSON.stringify()**: A built-in JavaScript method that converts an object to a JSON string. **Pros and Cons of Each Approach** 1. **_.isEqual**: * Pros: Efficient for comparing complex data structures, handles cyclic references, and provides more informative results. * Cons: Dependent on the Lodash library, may not be suitable for very large datasets due to memory constraints. 2. **toString()**: * Pros: Simple, lightweight, and works well for small datasets. * Cons: May not provide accurate results for complex data structures or large datasets, as it only checks for reference equality. 3. **JSON.stringify()**: * Pros: Works well for large datasets and provides a human-readable representation of the data. * Cons: Can be slow due to the overhead of converting objects to strings, may not handle cyclic references correctly. **Library Used** The Lodash library is used in this benchmark. `_.isEqual` is a function from the Lodash library that checks for deep equality between two objects or arrays. The library provides a convenient and efficient way to compare complex data structures. **Special JS Feature/Syntax** None of the individual test cases use any special JavaScript features or syntax. **Other Alternatives** If you need to compare the performance of different equality checking methods, you may also consider using other libraries or built-in functions like: * `===` (equality check operator) * `Object.is()` (Equality check method introduced in ECMAScript 2015) * Custom implementations using bitwise operations and iteration. Keep in mind that these alternatives may have different performance characteristics and trade-offs compared to the approaches tested in this benchmark.
Related benchmarks
Lodash.isEqual vs JSON.stringify Equality Comparison for Shallow Array of Strings.
Lodash.isEqual vs JSON.stringify Equality Comparison for Shallow Array of Strings when comparison is not equal.
Lodash.isEqual vs JSON.stringify Equality Comparison for Shallow Array of Strings. Lodash v 4.17.11
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