Benchmark: Assignment of values vs Destructuring an object of multiple values

Tests:

destructure
const obj = {a: 'a', b: 'b', c: 'c'}; const {a, b, c } = obj console.log(a, b, c);
assign
const a = 'a'; const b = 'b'; const c = 'c'; console.log(a, b, c);

Rendered benchmark preparation results:

Suite status: <idle, ready to run>

Previous results

Test case name	Result
destructure
assign

Fastest: N/A

Slowest: N/A

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

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Let's break down the JavaScript microbenchmark on MeasureThat.net.

**What is tested?**

The benchmark compares two approaches to log values in a JavaScript console:

1. **Destructuring an object of multiple values**: This approach uses the `const {a, b, c} = obj` syntax to extract properties from an object into separate variables.
2. **Assignment of individual values**: This approach uses explicit assignments like `const a = 'a';`, `const b = 'b';`, and `const c = 'c';` to assign values to variables.

**Options compared**

The benchmark compares the performance of these two approaches:

* **Pros of Destructuring:**
	+ More concise code
	+ Easier to read and maintain
	+ Can be more efficient, as it avoids explicit assignments
* **Cons of Destructuring:**
	+ May require additional libraries or polyfills for older browsers
	+ Can lead to variable hoisting issues if not used carefully
* **Pros of Assignment:**
	+ More widely supported across different browsers and versions
	+ Easier to understand for developers familiar with explicit assignments
	+ Less prone to variable hoisting issues

**Library usage**

There is no explicit library mentioned in the benchmark. However, some browsers may use libraries or polyfills under the hood to support advanced JavaScript features.

**Special JS feature: Syntax sugar**

The destructuring syntax (`const {a, b, c} = obj`) is an example of "syntax sugar" – a concise way to express a concept that's already implemented in the language. This syntax is supported by modern browsers and can make code more readable and maintainable.

**Other considerations**

When choosing between these approaches, consider the following factors:

* Code readability and maintainability: Destructuring can be more concise and easier to read.
* Browser support: Assignment-style logging may require additional libraries or polyfills for older browsers.
* Performance: Both approaches have their performance characteristics; however, destructuring might provide a slight advantage due to reduced overhead.

**Alternatives**

Other alternatives for similar use cases include:

1. Using `Object.keys()` and looping over the array of keys to extract values from an object.
2. Using a library like Lodash or other utility functions for property extraction.
3. Implementing your own custom logging function that can handle variable assignments or object destructuring.

Keep in mind that these alternatives might have different performance characteristics, code readability, and browser support requirements compared to the original approach tested by this benchmark.

Related benchmarks:

Assignment of values vs Destructuring an object of multiple values (version: 0)

Comparing performance of: destructure vs assign

Created: 4 years ago by: Guest

Jump to the latest result

destructure

assign

Suite status: <idle, ready to run>

Fastest: N/A

Slowest: N/A

No previous run results

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