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asdfasdfasdf
(version: 0)
asdfasdfasdf
Comparing performance of:
_.isEqual(window.foo1, window.bar1) vs JSON.stringify(window.foo1) === JSON.stringify(window.bar1);
Created:
6 years ago
by:
Guest
Jump 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.foo1 = { tasks: [{ id:'1', start_date: '1', end_date: '2'}, { id:'1', start_date: '1', end_date: '2'}, { id:'1', start_date: '1', end_date: '2'},{ id:'1', start_date: '1', end_date: '2'},{ id:'1', start_date: '1', end_date: '2'},{ id:'1', start_date: '1', end_date: '2'},{ id:'1', start_date: '1', end_date: '2'},{ id:'1', start_date: '1', end_date: '2'},{ id:'1', start_date: '1', end_date: '2'},{ id:'1', start_date: '1', end_date: '2'},{ id:'1', start_date: '1', end_date: '2'},{ id:'1', start_date: '1', end_date: '2'},{ id:'1', start_date: '1', end_date: '2'},{ id:'1', start_date: '1', end_date: '2'}], links:[{ id:'1', start_date: '1', end_date: '2'}, { id:'1', start_date: '1', end_date: '2'}, { id:'1', start_date: '1', end_date: '2'},{ id:'1', start_date: '1', end_date: '2'},{ id:'1', start_date: '1', end_date: '2'},{ id:'1', start_date: '1', end_date: '2'},{ id:'1', start_date: '1', end_date: '2'},{ id:'1', start_date: '1', end_date: '2'},{ id:'1', start_date: '1', end_date: '2'},{ id:'1', start_date: '1', end_date: '2'},{ id:'1', start_date: '1', end_date: '2'},{ id:'1', start_date: '1', end_date: '2'},{ id:'1', start_date: '1', end_date: '2'},{ id:'1', start_date: '1', end_date: '2'}] } window.bar1 = { tasks: [{ id:'1', start_date: '1', end_date: '2'}, { id:'1', start_date: '1', end_date: '2'}, { id:'1', start_date: '1', end_date: '2'},{ id:'1', start_date: '1', end_date: '2'},{ id:'1', start_date: '1', end_date: '2'},{ id:'1', start_date: '1', end_date: '2'},{ id:'1', start_date: '1', end_date: '2'},{ id:'1', start_date: '1', end_date: '2'},{ id:'1', start_date: '1', end_date: '2'},{ id:'1', start_date: '1', end_date: '2'},{ id:'1', start_date: '1', end_date: '2'},{ id:'1', start_date: '1', end_date: '2'},{ id:'1', start_date: '1', end_date: '2'},{ id:'1', start_date: '1', end_date: '2'}], links:[{ id:'1', start_date: '1', end_date: '2'}, { id:'1', start_date: '1', end_date: '2'}, { id:'1', start_date: '1', end_date: '2'},{ id:'1', start_date: '1', end_date: '2'},{ id:'1', start_date: '1', end_date: '2'},{ id:'1', start_date: '1', end_date: '2'},{ id:'1', start_date: '1', end_date: '2'},{ id:'1', start_date: '1', end_date: '2'},{ id:'1', start_date: '1', end_date: '2'},{ id:'1', start_date: '1', end_date: '2'},{ id:'1', start_date: '1', end_date: '2'},{ id:'1', start_date: '1', end_date: '2'},{ id:'1', start_date: '1', end_date: '2'},{ id:'1', start_date: '1', end_date: '2'}] }
Tests:
_.isEqual(window.foo1, window.bar1)
_.isEqual(window.foo1, window.bar1)
JSON.stringify(window.foo1) === JSON.stringify(window.bar1);
JSON.stringify(window.foo1) === JSON.stringify(window.bar1);
Rendered benchmark preparation results:
Suite status:
<idle, ready to run>
Run tests (2)
Previous results
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Test case name
Result
_.isEqual(window.foo1, window.bar1)
JSON.stringify(window.foo1) === JSON.stringify(window.bar1);
Fastest:
N/A
Slowest:
N/A
Latest run results:
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Autogenerated LLM Summary
(model
llama3.2:3b
, generated one year ago):
I'll break down the provided benchmark definition and explanation of what's being tested. **What is being tested?** The two individual test cases measure the performance difference between two approaches to compare two JavaScript objects, `window.foo1` and `window.bar1`. **Options compared:** 1. **Lodash's `_.isEqual()` function**: This function checks whether two values are equal. 2. **JSON string comparison using `===` operator**: This is a simple string comparison method. **Pros and Cons of each approach:** 1. **Lodash's `_.isEqual()` function**: * Pros: + Provides a more nuanced and flexible equality check, considering various aspects like value, type, and context. + Can handle complex data structures and edge cases. * Cons: + May be slower due to the overhead of a custom equality function. + Requires an external dependency (Lodash). 2. **JSON string comparison using `===` operator**: * Pros: + Extremely fast, as it's a simple string comparison. + No external dependencies required. * Cons: + May not consider all aspects of equality, leading to false positives or negatives. + Can be brittle and break easily when dealing with complex data structures. **Other considerations:** In general, using `_.isEqual()` is often a better choice for comparing objects, as it handles various nuances and edge cases. However, in this specific benchmark, the performance difference between the two approaches might be significant due to the simple string comparison method used for JSON equality check. **Library usage:** Lodash's `_isEqual()` function uses JavaScript's built-in `Object.keys()`, `Array.prototype.every()`, and `===` operator under the hood. This means that Lodash is utilizing native JavaScript features to compare objects. There are no other libraries mentioned in the benchmark definition. **Special JS feature or syntax:** No special features or syntax are used in this benchmark. However, it's worth noting that the use of object destructuring (`window.foo1 = {...}`) and arrow functions (`window.bar1 = { ... => ({ id:'1', start_date: '1', end_date: '2' }) }`) is typical modern JavaScript syntax. **Alternatives:** If you want to compare objects without using Lodash, you can implement a simple equality check function using native JavaScript features, like this: ```javascript function isEqual(obj1, obj2) { if (typeof obj1 !== typeof obj2) return false; const keys1 = Object.keys(obj1); const keys2 = Object.keys(obj2); if (keys1.length !== keys2.length) return false; for (const key of keys1) { if (obj1[key] !== obj2[key]) return false; } return true; } ``` This implementation is more verbose than Lodash's `_isEqual()` function but still provides a simple and effective way to compare objects.
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