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_.isEmpty() vs Object.keys().length 3 properties
(version: 0)
Comparing performance of:
Object.keys vs _.isEmpty
Created:
5 years ago
by:
Guest
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HTML Preparation code:
<script src="https://cdnjs.cloudflare.com/ajax/libs/lodash.js/4.17.4/lodash.min.js"></script>
Script Preparation code:
window.obj = {error: true, error2: true, error3: true};
Tests:
Object.keys
Object.keys(window.obj).length;
_.isEmpty
_.isEmpty(window.obj);
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
_.isEmpty
Fastest:
N/A
Slowest:
N/A
Latest run results:
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Autogenerated LLM Summary
(model
llama3.2:3b
, generated one year ago):
Let's break down what's being tested in this benchmark. **Benchmark Overview** The benchmark compares the performance of two approaches: 1. `Object.keys(window.obj).length`: This approach uses the built-in `Object.keys()` method to get an array of the object's own enumerable property names, and then returns the length of that array. 2. `_.isEmpty(window.obj)`: This approach uses the Lodash library (`_`) to check if the object is empty. **Approaches Compared** Both approaches have their pros and cons: * **Object.keys() method**: + Pros: Widely supported, easy to understand, no additional dependencies required. + Cons: May be slower for large objects due to the overhead of getting an array of property names. * **Lodash _.isEmpty() function**: + Pros: Optimized for performance, handles edge cases like null or undefined values. + Cons: Requires an additional dependency (the Lodash library), may not be familiar to all developers. **Lodash Library** The `_.isEmpty()` function from Lodash is a utility function that checks if an object has zero properties. It's a simple and efficient way to perform this check, making it a popular choice among developers. **Special JS Features or Syntax** Neither of the approaches requires any special JavaScript features or syntax beyond what's built into the language. **Other Alternatives** For those who might be interested in exploring other alternatives: * **Using Array.prototype.length instead**: `window.obj.length` can be used to get the number of properties in an object. However, this approach is not supported in older browsers and may have different performance characteristics. * **Custom implementation**: You could implement a custom function to check if an object is empty using bitwise operations or other techniques. However, this would likely require more effort and may not be as efficient as the Lodash solution. In summary, the benchmark compares two approaches for checking if an object has any properties: using the built-in `Object.keys()` method versus the optimized `_isEmpty()` function from Lodash. The choice of approach depends on performance requirements, familiarity with the library, and specific use cases.
Related benchmarks:
_.isEmpty() vs Object.keys().length empty objects
isEmpty vs Object.keys
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Lodash isEmpty vs Native Javascript
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