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Deep Clone Benchmark
(version: 0)
Comparing performance of:
JSON.stringify and JSON.parse vs jQuery extend
Created:
6 years ago
by:
Registered User
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HTML Preparation code:
<script src='https://cdnjs.cloudflare.com/ajax/libs/jquery/3.3.1/jquery.js'></script>
Script Preparation code:
var obj = { name: "K線", parameters: [ { value: 5, min: 1, max: 240, step: 1 }, { value: 10, min: 1, max: 240, step: 1 }, { value: 20, min: 1, max: 240, step: 1 }, { value: 60, min: 1, max: 240, step: 1 }, { value: 120, min: 1, max: 240, step: 1 }, { value: 240, min: 1, max: 240, step: 1 } ] };
Tests:
JSON.stringify and JSON.parse
var newObj = JSON.parse(JSON.stringify(obj));
jQuery extend
var newObj = $.extend(true, {}, obj);
Rendered benchmark preparation results:
Suite status:
<idle, ready to run>
Run tests (2)
Previous results
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Test case name
Result
JSON.stringify and JSON.parse
jQuery extend
Fastest:
N/A
Slowest:
N/A
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Autogenerated LLM Summary
(model
llama3.2:3b
, generated one year ago):
Let's break down the provided benchmark and explain what's being tested. **Benchmark Definition** The benchmark is defined in JSON format, which provides details about the test case. The two test cases are: 1. "JSON.stringify and JSON.parse" 2. "jQuery extend" These test cases measure the performance of two different approaches to deep cloning an object: using `JSON.stringify` and `JSON.parse`, and using jQuery's `$.extend(true, {}, obj)` method. **What is being tested?** The primary focus is on comparing the execution speed of these two methods for creating a deep clone of an object. In other words, we're testing how fast each approach can create a new copy of an object, including its nested properties and values. **Options compared:** Two options are being compared: 1. **JSON.stringify and JSON.parse**: This method uses the built-in `JSON.stringify` function to serialize the object into a string, and then uses `JSON.parse` to deserialize it back into an object. 2. **jQuery extend**: This method uses jQuery's `$.extend(true, {}, obj)` function to merge the object with a new copy of itself, creating a deep clone. **Pros and cons:** Here are some pros and cons for each approach: * **JSON.stringify and JSON.parse**: + Pros: - Lightweight and easy to implement. - Works well for simple objects. + Cons: - Can be slower than other methods, especially for large objects. - May require additional processing to convert data types. * **jQuery extend**: + Pros: - Fast and efficient for creating deep clones. - Handles complex object structures with ease. + Cons: - Requires jQuery library inclusion, which may add overhead. - May have performance issues if not implemented correctly. **Library usage:** The test case uses the jQuery library to implement the `$.extend(true, {}, obj)` method. jQuery is a popular JavaScript library for DOM manipulation and event handling, but it's also often used for utility functions like this deep cloning implementation. **Special JS features or syntax:** None of the provided test cases use any special JavaScript features or syntax that would require additional explanation. The focus is solely on the performance comparison between these two cloning methods. **Alternatives:** If you're looking for alternative approaches to deep cloning objects in JavaScript, here are some other options: * **Lodash's `cloneDeep` function**: This is a popular utility function for creating deep clones of objects. * **Underscore.js's `_clone` function**: Another well-known library that provides a clone function for objects. * **Built-in `Array.prototype.slice()` and `Object.assign()` methods**: These can be used to create shallow or deep copies of arrays and objects, respectively. Keep in mind that the best approach will depend on your specific use case and performance requirements.
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