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Angular clone vs Lodash clone (shallow) vs JSON Clone
(version: 0)
Comparing performance of:
Lodash clone (shallow) vs Json clone vs Angular copy
Created:
3 years ago
by:
Guest
Jump to the latest result
HTML Preparation code:
<script src="https://ajax.googleapis.com/ajax/libs/angularjs/1.8.3/angular.min.js"></script> <script src='https://cdnjs.cloudflare.com/ajax/libs/lodash.js/4.17.15/lodash.min.js'></script>
Script Preparation code:
var MyObject = { description: 'Creates a deep copy of source, which should be an object or an array.', myNumber: 123456789, myBoolean: true, jayson: { stringify: 'JSON.stringify() method converts a JavaScript value to a JSON string....', parse: 'JSON.parse() method parses a JSON string...' } }; var myCopy = null;
Tests:
Lodash clone (shallow)
myCopy = _.clone(MyObject);
Json clone
myCopy = JSON.parse(JSON.stringify(MyObject));
Angular copy
myCopy = angular.copy(MyObject);
Rendered benchmark preparation results:
Suite status:
<idle, ready to run>
Run tests (3)
Previous results
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Test case name
Result
Lodash clone (shallow)
Json clone
Angular copy
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 the provided JSON and explain what's being tested. **Benchmark Definition** The benchmark definition describes three different approaches to create a copy of an object: Lodash clone (shallow), JSON clone, and Angular copy. 1. **Lodash Clone**: The `_.clone()` function from the Lodash library is used to create a shallow copy of the original object. 2. **JSON Clone**: The `JSON.parse(JSON.stringify(obj))` method is used to create a deep copy of the original object by parsing the JSON string representation of the object and then creating a new object from it. 3. **Angular Copy**: The `angular.copy()` function (now deprecated in Angular 9+) is used to create a shallow copy of the original object. **Pros and Cons** Here's a brief overview of each approach: 1. **Lodash Clone (Shallow)**: * Pros: Fast, simple, and widely supported. * Cons: Only creates a shallow copy, meaning it only copies the top-level properties and not nested objects or arrays. This can lead to unexpected behavior if the original object contains complex data structures. 2. **JSON Clone (Deep)**: * Pros: Creates a deep copy of the entire object, including all nested objects and arrays. * Cons: Slower than Lodash clone due to the additional parsing step required. 3. **Angular Copy**: * Pros: Fast and easy to use, especially in Angular applications where `angular.copy()` is a built-in function. * Cons: Only creates a shallow copy, similar to Lodash clone. **Library Usage** In this benchmark, two libraries are used: 1. **Lodash**: A popular utility library that provides various functions for tasks such as cloning objects, manipulating arrays, and more. 2. **Angular**: A JavaScript framework for building web applications. The `angular.copy()` function is used in the benchmark to create a shallow copy of the original object. **Special JS Features/Syntax** None mentioned in this benchmark. **Other Alternatives** If you're looking for alternatives to these approaches, consider: 1. **Object.assign()**: A simple way to create a shallow copy of an object. 2. **Array.prototype.slice()**: Can be used to clone arrays, but not suitable for objects with complex data structures. 3. **Spread Operator (`...`)**: Can be used to create a shallow copy of objects by spreading their properties into a new object. Keep in mind that the choice of method depends on your specific use case and performance requirements.
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