Benchmark: Angularjs copy vs JSON.parse(JSON.stringify())

HTML Preparation code:

<html>
  <head>
  <script src="https://ajax.googleapis.com/ajax/libs/angularjs/1.7.6/angular.min.js"></script>
  </head>
  <body>
  </body>
</html>

AخA
 
<html>
  <head>
  <script src="https://ajax.googleapis.com/ajax/libs/angularjs/1.7.6/angular.min.js"></script>
  </head>
  <body>
  </body>
</html>

Script Preparation code:

var origObj = {
 Object: { Name: "Object1", Desc: "Desc2" },
 Object2: { Name: "Object2", Desc: "Desc2" },
 Array1: [ "item2", "xitem2", "item3", "item1", "item2", "itexm6", "item1", "item7", "itesm1" ],
 Array2: [ "itexm1", "item3", "item1", "istem9", "item2", "item1", "itemx8", "ites1", "itesm1" ],
 Array3: [ "item3", "itesm1", "item7", "item1", "itexm1", "item33", "ixtem1", "itesm1", "itezm0" ],
};

var newObj = {};

​x
 
var origObj = { Object: { Name: "Object1", Desc: "Desc2" }, Object2: { Name: "Object2", Desc: "Desc2" }, Array1: [ "item2", "xitem2", "item3", "item1", "item2", "itexm6", "item1", "item7", "itesm1" ], Array2: [ "itexm1", "item3", "item1", "istem9", "item2", "item1", "itemx8", "ites1", "itesm1" ], Array3: [ "item3", "itesm1", "item7", "item1", "itexm1", "item33", "ixtem1", "itesm1", "itezm0" ],};​var newObj = {};

Tests:

angular.copy()
newObj = angular.copy(origObj);
newObj = angular.copy(origObj);
JSON.parse(JSON.stringify())
newObj = JSON.parse(JSON.stringify(origObj));
newObj = JSON.parse(JSON.stringify(origObj));

Rendered benchmark preparation results:

Suite status: <idle, ready to run>

Previous results

Experimental features:

Memory measurements supported only in Chrome.
For precise memory measurements Chrome must be launched with --enable-precise-memory-info flag.
More information: Monitoring JavaScript Memory

Test case name	Result
angular.copy()
JSON.parse(JSON.stringify())

Fastest: N/A

Slowest: N/A

Latest run results:

Run details: (Test run date: 2 years ago)

User agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/104.0.0.0 Safari/537.36

Browser/OS: Chrome 104 on Mac OS X 10.15.7

View result in a separate tab

Test name	Executions per second
angular.copy()	489070.6 Ops/sec
JSON.parse(JSON.stringify())	238913.4 Ops/sec

Autogenerated LLM Summary (model llama3.2:3b, generated 7 months ago):

Let's break down the provided benchmark.

Benchmark Definition

The benchmark measures the performance of two approaches for copying an object in JavaScript: angular.copy() and JSON.parse(JSON.stringify()).

Options being compared

Two options are being compared:

angular.copy(): This function is part of the AngularJS library, which creates a deep copy of the original object.
JSON.parse(JSON.stringify()): This approach uses the JSON.stringify() method to serialize the object and then parses the resulting string back into an object.

Pros and Cons

angular.copy():
- Pros: It's a dedicated function for creating copies, which can be more efficient than using other methods.
- Cons: It's specific to AngularJS and may not work in all JavaScript environments.
JSON.parse(JSON.stringify()):
- Pros: It's widely supported across JavaScript engines and environments, as it uses the built-in JSON object.
- Cons: This approach can be slower than using a dedicated copy function like angular.copy(), especially for large objects.

Library usage

The benchmark uses the AngularJS library, specifically the angular.copy() function. The purpose of this library is to provide a set of tools and features for building web applications, including DOM manipulation, data binding, and dependency injection.

Special JS feature or syntax

There are no special JavaScript features or syntaxes being tested in this benchmark. However, it's worth noting that the use of JSON.parse(JSON.stringify()) relies on the fact that JSON strings can be parsed back into objects using the JSON object.

Other alternatives

If you wanted to implement your own copy function without using a dedicated library like AngularJS, you could consider the following alternatives:

Spread operator ({...obj}): This is a modern JavaScript feature introduced in ECMAScript 2018. It allows you to create a shallow copy of an object by spreading its properties into a new object.
Object.assign(): This method creates a shallow copy of an object by assigning its properties to a new object.
Array.prototype.slice() and Object.keys(): You can use these methods in combination to create a deep copy of an array-like object.

Each of these alternatives has its own trade-offs and may be more suitable for specific use cases or performance requirements.

LLMs can make mistakes. Check important info.

Let's break down the provided benchmark.

**Benchmark Definition**

The benchmark measures the performance of two approaches for copying an object in JavaScript: `angular.copy()` and `JSON.parse(JSON.stringify())`.

**Options being compared**

Two options are being compared:

1. **angular.copy()**: This function is part of the AngularJS library, which creates a deep copy of the original object.
2. **JSON.parse(JSON.stringify())**: This approach uses the `JSON.stringify()` method to serialize the object and then parses the resulting string back into an object.

**Pros and Cons**

1. **angular.copy()**:
	* Pros: It's a dedicated function for creating copies, which can be more efficient than using other methods.
	* Cons: It's specific to AngularJS and may not work in all JavaScript environments.
2. **JSON.parse(JSON.stringify())**:
	* Pros: It's widely supported across JavaScript engines and environments, as it uses the built-in `JSON` object.
	* Cons: This approach can be slower than using a dedicated copy function like `angular.copy()`, especially for large objects.

**Library usage**

The benchmark uses the AngularJS library, specifically the `angular.copy()` function. The purpose of this library is to provide a set of tools and features for building web applications, including DOM manipulation, data binding, and dependency injection.

**Special JS feature or syntax**

There are no special JavaScript features or syntaxes being tested in this benchmark. However, it's worth noting that the use of `JSON.parse(JSON.stringify())` relies on the fact that JSON strings can be parsed back into objects using the `JSON` object.

**Other alternatives**

If you wanted to implement your own copy function without using a dedicated library like AngularJS, you could consider the following alternatives:

1. **Spread operator (`{...obj}`)**: This is a modern JavaScript feature introduced in ECMAScript 2018. It allows you to create a shallow copy of an object by spreading its properties into a new object.
2. **`Object.assign()`**: This method creates a shallow copy of an object by assigning its properties to a new object.
3. **`Array.prototype.slice()` and `Object.keys()`**: You can use these methods in combination to create a deep copy of an array-like object.

Each of these alternatives has its own trade-offs and may be more suitable for specific use cases or performance requirements.

Related benchmarks:

Angularjs copy vs JSON.parse(JSON.stringify()) (version: 0)

angular.copy vs JSON.parse(JSON.stringify())

Comparing performance of: angular.copy() vs JSON.parse(JSON.stringify())

Created: 5 years ago by: Guest

Jump to the latest result

angular.copy()

JSON.parse(JSON.stringify())

Suite status: <idle, ready to run>

Experimental features:

Fastest: N/A

Slowest: N/A

Autogenerated LLM Summary (model llama3.2:3b, generated 7 months ago):