Benchmark: Object.assign vs. JSON String/Parse v3b

Tests:

object notation
var i = 0; var l; var n; while(i < 1000) { i++; l = { foo: 'bar', hello: [{hello: 'world', foo: 'bar'},{hello: 'world', foo: 'bar'},{hello: 'world', foo: 'bar'},{hello: 'world', foo: 'bar'}]}; }
JSON parse
var i = 0; var l; var n = '{"foo": "bar", "hello": [{"hello": "world", "foo": "bar"},{"hello": "world", "foo": "bar"},{"hello": "world", "foo": "bar"},{"hello": "world", "foo": "bar"}]}'; while(i < 1000) { i++; l = JSON.parse(n); }
Object assign
var i = 0; var l; var n = {foo: 'bar', hello: [{hello: 'world', foo: 'bar'},{hello: 'world', foo: 'bar'},{hello: 'world', foo: 'bar'},{hello: 'world', foo: 'bar'}]}; while(i < 1000) { i++; l = Object.assign({}, n); }

Rendered benchmark preparation results:

Suite status: <idle, ready to run>

Previous results

Test case name	Result
object notation
JSON parse
Object assign

Fastest: N/A

Slowest: N/A

Autogenerated LLM Summary (model llama3.2:3b, generated one month ago):

LLMs can make mistakes. Check important info.

Measuring performance differences between Object.assign, JSON parsing, and object notation is a common task in JavaScript development. Let's break down the provided benchmark definitions and options.

**Benchmark Definitions:**

1. **Object Notation**: This test case uses the traditional JavaScript object literal syntax to define an object with nested properties.
2. **JSON Parse**: This test case uses the JSON.parse() method to parse a JSON string into a JavaScript object.
3. **Object Assign**: This test case uses the Object.assign() method to create a shallow copy of an object.

**Options Compared:**

* Object Notation vs. JSON Parse
* Object Notation vs. Object Assign
* JSON Parse vs. Object Assign

**Pros and Cons of Each Approach:**

1. **Object Notation**:
	* Pros: Typically faster, as it avoids the overhead of parsing a string and creating an object.
	* Cons: Can be more verbose for large objects or complex structures.
2. **JSON Parse**:
	* Pros: More flexible and human-readable, especially for data exchange between systems.
	* Cons: Can be slower due to the parsing process, which involves multiple steps (lexing, tokenization, and parsing).
3. **Object Assign**:
	* Pros: Convenient and concise, but can be slower than object notation due to the overhead of method calls.
	* Cons: May not work as expected with certain types of objects or inheritance.

**Library Usage:**

None mentioned in this benchmark definition. However, it's worth noting that other benchmarks might use libraries like JSON.parse() or Object.assign(), which are built-in methods in JavaScript.

**Special JS Features/Syntax:**

* None explicitly mentioned in this benchmark definition. However, the use of `var` and `while` loops suggests a focus on basic syntax and semantics rather than advanced features.
* JSON strings (e.g., `"foo": "bar"`) are used in all tests, which is a common pattern for representing data in JavaScript.

**Other Alternatives:**

For measuring performance differences between these methods, other alternatives might include:

* Using a different browser or environment to execute the benchmarks
* Changing the input size and complexity of the objects
* Adding more test cases to cover various scenarios (e.g., large arrays, nested objects)
* Comparing performance with alternative libraries or frameworks (e.g., React, Angular)

In conclusion, this benchmark measures the performance differences between traditional object notation, JSON parsing, and object assign methods. The results provide insights into the trade-offs between these approaches in terms of speed, conciseness, and readability.

Latest run results:

Run details: (Test run date: 4 years ago)

User agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/78.0.3904.97 Safari/537.36

Browser/OS: Chrome 78 on Windows

View result in a separate tab

Test name	Executions per second
object notation	1858041.2 Ops/sec
JSON parse	445.1 Ops/sec
Object assign	4580.6 Ops/sec

Related benchmarks:

Object.assign vs. JSON String/Parse v3b (version: 1)

Comparing performance of: object notation vs JSON parse vs Object assign

Created: 4 years ago by: Registered User

Jump to the latest result

object notation

JSON parse

Object assign

Suite status: <idle, ready to run>

Experimental features:

Fastest: N/A

Slowest: N/A

Autogenerated LLM Summary (model llama3.2:3b, generated one month ago):