Benchmark: Assignment of value vs Destructuring an object 2

Tests:

Assign
const obj = {a: { e: { i: 6 } } }; const i = obj.a.e.i; console.log(i);
Destructure
const obj = {a: { e: { i: 6 } } }; const { a: { e: { i} } } = obj; console.log(i);

Rendered benchmark preparation results:

Suite status: <idle, ready to run>

Previous results

Test case name	Result
Assign
Destructure

Fastest: N/A

Slowest: N/A

Latest run results:

Run details: (Test run date: one year ago)

User agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/110.0.0.0 Safari/537.36

Browser/OS: Chrome 110 on Mac OS X 10.15.7

View result in a separate tab

Test name	Executions per second
Assign	361427.0 Ops/sec
Destructure	360837.6 Ops/sec

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

LLMs can make mistakes. Check important info.

Let's dive into the explanation of what is being tested on MeasureThat.net.

**Benchmark Overview**

The benchmark is designed to compare two approaches: assigning a value to a variable (`Assign`) and destructuring an object using shorthand syntax (`Destructure`). The benchmark is focused on measuring the performance difference between these two methods in JavaScript.

**Options Compared**

There are only two options being compared:

1. **Assignment of value**: This approach involves assigning the value `6` directly to a variable, e.g., `const i = 6;`.
2. **Destructuring an object using shorthand syntax**: This approach uses the syntax `{a: { e: { i} }}` to extract the value `i` from an object.

**Pros and Cons of Each Approach**

* **Assignment of value**:
	+ Pros:
		- Simple and straightforward.
		- Easy to read and understand.
	+ Cons:
		- May be slower due to the overhead of creating a variable.
* **Destructuring an object using shorthand syntax**:
	+ Pros:
		- Can be faster since it avoids creating an intermediate variable.
		- Can be more concise and expressive in certain situations.
	+ Cons:
		- May require a temporary hold on interpretation due to the complexity of parsing this type of syntax.

**Library and Purpose**

There is no library used in this benchmark. The performance difference is being measured directly between the two approaches.

**Special JavaScript Feature or Syntax**

The benchmark uses destructuring assignment, which is a feature introduced in ECMAScript 2015 (ES6). It allows for concise object property extraction using syntax like `{a: { e: { i} }}`.

**Other Considerations**

To ensure accurate results, the benchmark likely considers factors such as:

* Browser and device support
* JavaScript engine optimizations
* Code caching and optimization techniques

**Alternatives**

If you're looking to explore similar benchmarks or test other JavaScript performance scenarios, you might consider MeasureThat.net's existing benchmarks, which cover a wide range of topics, including:

* Array methods (e.g., `forEach`, `map`, `filter`)
* String manipulation
* Function calls and closure behavior
* JSON parsing and serialization

Additionally, you can explore other online benchmarking tools, such as:

* jsperf.com (now deprecated but still accessible)
* speedometerjs.org
* micro-benchmarking libraries like `benchmark` or `test-ify`

These alternatives offer a range of features, including more extensive benchmarking capabilities, customization options, and support for additional JavaScript versions.

Related benchmarks:

Assignment of value vs Destructuring an object 2 (version: 0)

Comparing performance of: Assign vs Destructure

Created: 2 years ago by: Guest

Jump to the latest result

Assign

Destructure

Suite status: <idle, ready to run>

Experimental features:

Fastest: N/A

Slowest: N/A

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